A portable design language for agents: download the markdown first, then inspect the preview, tokens, and rules as needed.
Portable DESIGN.md source of truth for most agents and apps.
A three-zone product shell: a 78px monochrome instrument rail, a 248px context column, and a fluid work canvas of glass panes that reads like premium hardware software.
Let typography, glass elevation, and semantic paint edge-tabs create hierarchy; saturated colour is reserved for active decisions, states, and alerts only.
Moderate product density: compact controls, airy section spacing, and visible state metadata for a trusted professional tool.
Semantic gouache tabs on frosted panes — small irregular radial paint marks clipped to a short edge strip on cards, buttons, and selected rows, each tab's colour naming exactly one product role.
Three-zone shell: 78px utility rail, 248px context column, fluid work canvas; twelve-column canvas on desktop.
Cool and architectural — generous outer gutters, tight internal control spacing, no loose decorative gaps.
Compact controls inside airy sections; metadata in mono small-caps.
Below 900px the rail collapses to a horizontal strip, the context column stacks, grids fold to a single column with minmax(0,1fr); only the landing hero is full-bleed.
frostmark
Subjects veiled behind layered translucent frosted-glass panes with crisp hairline seams and gouache daubs cresting the edges; cool charcoal-to-white tonal depth, premium hardware and optical-glass subjects.
Full-bleed landing hero in the Frostmark technique; the daub palette stays a restrained accent. Avoid decorative rainbow art and neon glow.
# Vellum ## Philosophy A cool frosted-glass product console where silver panes stay quiet and a single gouache daub speaks for each state — every saturated colour bound to one named product role, never decoration. ### Values - product-first neutrality - semantic chroma with restraint - premium optical calm - accessible hierarchy - handmade colour intelligence ### Anti-Values - rainbow decoration without function - generic startup blobs - neon cyberpunk glow - textbook colour-wheel layouts ## Tokens ### Colors | Name | Value | |------|-------| | bg | `#EEF1F5` | | surface | `#FFFFFF` | | surface_2 | `#F6F8FB` | | text | `#141C24` | | muted | `#59636F` | | border | `#D6DDE6` | | accent | `#FF6F5B` | | accent_2 | `#2FA9E8` | | accent_3 | `#9CCB2E` | | accent_4 | `#F4A621` | | accent_5 | `#7C6CF0` | | on_accent | `#FFFFFF` | | success | `#6FA315` | | warning | `#C97E08` | | error | `#C9352A` | | info | `#1E7FB8` | ### Typography - **Base Size**: 17px - **Body Font**: Inter - **Heading Font**: Instrument Sans - **Mono Font**: IBM Plex Mono - **Heading Weight**: 700 - **Heading Transform**: none - **Letter Spacing**: -0.022em - **Line Height**: 1.55 - **Scale Ratio**: 1.22 - **Google Fonts Url**: https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=Instrument+Sans:wght@500;600;700&family=Inter:wght@400;500;600;700&display=swap ### Radii - **None**: 0 - **Sm**: 8px - **Md**: 16px - **Lg**: 24px - **Full**: 9999px ### Shadows - **Sm**: 0 1px 2px rgba(20,28,36,0.06) - **Md**: 0 14px 36px rgba(20,28,36,0.10) - **Lg**: 0 30px 80px rgba(20,28,36,0.14) ### Spacing - **Base**: 8px - **Scale**: [4,8,12,16,24,32,48,64] ### Surfaces - **Treatment**: cool white glass with a 155deg white-to-silver gradient and backdrop blur - **Card Style**: white glass panes with an inset frost hairline, soft low-alpha shadow, and an optional gouache role edge-tab - **Bg Pattern**: near-invisible cool light wells on a silver field, never decorative confetti ### Borders - **Default Width**: 1px - **Accent Width**: 5px - **Style**: inset frost hairline on neutral panes; opaque gouache paint on semantic edge-tabs - **Character**: no outlines; depth comes from material and shadow, paint marks only where a state owns the colour ### Motion - **Duration**: 180ms - **Easing**: cubic-bezier(0.2, 0.8, 0.2, 1) - **Philosophy**: short material lift and colour-wash focus transitions, never bouncy or playful; settled state is the default ## Rules ### Composition A three-zone product shell: a 78px monochrome instrument rail, a 248px context column, and a fluid work canvas of glass panes that reads like premium hardware software. ### Hierarchy Let typography, glass elevation, and semantic paint edge-tabs create hierarchy; saturated colour is reserved for active decisions, states, and alerts only. ### Density Moderate product density: compact controls, airy section spacing, and visible state metadata for a trusted professional tool. ### Signature Semantic gouache tabs on frosted panes — small irregular radial paint marks clipped to a short edge strip on cards, buttons, and selected rows, each tab's colour naming exactly one product role. ## Layout ### Grid Three-zone shell: 78px utility rail, 248px context column, fluid work canvas; twelve-column canvas on desktop. ### Whitespace Cool and architectural — generous outer gutters, tight internal control spacing, no loose decorative gaps. ### Density Compact controls inside airy sections; metadata in mono small-caps. ### Responsive Below 900px the rail collapses to a horizontal strip, the context column stacks, grids fold to a single column with minmax(0,1fr); only the landing hero is full-bleed. ### Breakpoints - **Mobile**: 390px - **Tablet**: 768px - **Desktop**: 1440px - **Ultrawide**: 2560px ## Guidance ### Do - Bind each saturated colour to one named product role and keep the mapping fixed. - Keep most surfaces cool silver or white before adding any paint. - Place daubs as a legend that aligns to specific controls, rows, or modules. - Build elevation from glass material and soft shadow, never from borders. - Maintain WCAG-minded contrast for text and interactive states. ### Don't - Do not spray daubs as confetti or assign a colour a role it does not own. - Do not give a card a single decorative accent edge with no product meaning. - Do not introduce grey borders, muddy washes, or neon glow. - Do not turn the page into a flat colour-theory worksheet. - Do not let semantic red or amber become visually primary. ### Accessibility Charcoal #141C24 ink on white/silver panes clears WCAG AA; focus is a visible cyan outline plus a soft wash; role colour is always paired with a text label or pill, never colour alone; respects prefers-reduced-motion. ## Imagery Direction ### Pairs With frostmark ### Summary Subjects veiled behind layered translucent frosted-glass panes with crisp hairline seams and gouache daubs cresting the edges; cool charcoal-to-white tonal depth, premium hardware and optical-glass subjects. ### Subjects - premium audio control surfaces - optical glass and brushed metal hardware - instrument panels - studio monitoring rigs ### Usage Full-bleed landing hero in the Frostmark technique; the daub palette stays a restrained accent. Avoid decorative rainbow art and neon glow.
---
version: "alpha"
name: "Vellum"
description: "Agent-curated design language exported from Katagami as DESIGN.md."
colors:
bg: "#EEF1F5"
surface: "#FFFFFF"
surface_2: "#F6F8FB"
text: "#141C24"
muted: "#59636F"
border: "#D6DDE6"
accent: "#FF6F5B"
accent_2: "#2FA9E8"
accent_3: "#9CCB2E"
accent_4: "#F4A621"
accent_5: "#7C6CF0"
on_accent: "#FFFFFF"
success: "#6FA315"
warning: "#C97E08"
error: "#C9352A"
info: "#1E7FB8"
typography:
headline-lg:
fontFamily: "Instrument Sans"
fontSize: "1.929rem"
fontWeight: 700
lineHeight: 1.1
letterSpacing: "-0.022em"
headline-md:
fontFamily: "Instrument Sans"
fontSize: "1.581rem"
fontWeight: 600
lineHeight: 1.15
letterSpacing: "-0.022em"
body-md:
fontFamily: "Inter"
fontSize: "17px"
fontWeight: 400
lineHeight: 1.55
letterSpacing: "-0.022em"
label-md:
fontFamily: "IBM Plex Mono"
fontSize: "0.75rem"
fontWeight: 600
lineHeight: 1
letterSpacing: "0.08em"
rounded:
none: "0px"
sm: "8px"
md: "16px"
lg: "24px"
full: "9999px"
spacing:
base: "8px"
xs: "4px"
sm: "8px"
md: "12px"
lg: "16px"
xl: "24px"
2xl: "32px"
3xl: "48px"
4xl: "64px"
components:
color-reference-bg:
backgroundColor: "{colors.bg}"
color-reference-surface:
backgroundColor: "{colors.surface}"
color-reference-surface_2:
backgroundColor: "{colors.surface_2}"
color-reference-text:
backgroundColor: "{colors.text}"
color-reference-muted:
backgroundColor: "{colors.muted}"
color-reference-border:
backgroundColor: "{colors.border}"
color-reference-accent:
backgroundColor: "{colors.accent}"
color-reference-accent_2:
backgroundColor: "{colors.accent_2}"
color-reference-accent_3:
backgroundColor: "{colors.accent_3}"
color-reference-accent_4:
backgroundColor: "{colors.accent_4}"
color-reference-accent_5:
backgroundColor: "{colors.accent_5}"
color-reference-on_accent:
backgroundColor: "{colors.on_accent}"
color-reference-success:
backgroundColor: "{colors.success}"
color-reference-warning:
backgroundColor: "{colors.warning}"
color-reference-error:
backgroundColor: "{colors.error}"
color-reference-info:
backgroundColor: "{colors.info}"
button-primary:
backgroundColor: "{colors.accent}"
textColor: "#000000"
typography: "{typography.label-md}"
rounded: "{rounded.md}"
padding: "{spacing.md}"
card-surface:
backgroundColor: "{colors.surface}"
textColor: "{colors.text}"
rounded: "{rounded.md}"
padding: "{spacing.md}"
input-default:
backgroundColor: "{colors.surface}"
textColor: "{colors.text}"
rounded: "{rounded.md}"
height: "44px"
---
# Vellum
## Overview
A cool frosted-glass product console where silver panes stay quiet and a single gouache daub speaks for each state — every saturated colour bound to one named product role, never decoration.
### Values
- product-first neutrality
- semantic chroma with restraint
- premium optical calm
- accessible hierarchy
- handmade colour intelligence
### Anti-Values
- rainbow decoration without function
- generic startup blobs
- neon cyberpunk glow
- textbook colour-wheel layouts
## Colors
Use the YAML color tokens as the normative palette. The prose below names the roles agents should preserve when generating UI.
| Token | Value |
|-------|-------|
| bg | `#EEF1F5` |
| surface | `#FFFFFF` |
| surface_2 | `#F6F8FB` |
| text | `#141C24` |
| muted | `#59636F` |
| border | `#D6DDE6` |
| accent | `#FF6F5B` |
| accent_2 | `#2FA9E8` |
| accent_3 | `#9CCB2E` |
| accent_4 | `#F4A621` |
| accent_5 | `#7C6CF0` |
| on_accent | `#FFFFFF` |
| success | `#6FA315` |
| warning | `#C97E08` |
| error | `#C9352A` |
| info | `#1E7FB8` |
## Typography
- **Headline-Lg**: Instrument Sans, 1.929rem, weight 700, line-height 1.1.
- **Headline-Md**: Instrument Sans, 1.581rem, weight 600, line-height 1.15.
- **Body-Md**: Inter, 17px, weight 400, line-height 1.55.
- **Label-Md**: IBM Plex Mono, 0.75rem, weight 600, line-height 1.
## Layout
### Spacing Tokens
- **Base**: `8px`
- **Xs**: `4px`
- **Sm**: `8px`
- **Md**: `12px`
- **Lg**: `16px`
- **Xl**: `24px`
- **2xl**: `32px`
- **3xl**: `48px`
- **4xl**: `64px`
### Grid
Three-zone shell: 78px utility rail, 248px context column, fluid work canvas; twelve-column canvas on desktop.
### Whitespace
Cool and architectural — generous outer gutters, tight internal control spacing, no loose decorative gaps.
### Density
Compact controls inside airy sections; metadata in mono small-caps.
### Responsive
Below 900px the rail collapses to a horizontal strip, the context column stacks, grids fold to a single column with minmax(0,1fr); only the landing hero is full-bleed.
### Breakpoints
- **Mobile**: 390px
- **Tablet**: 768px
- **Desktop**: 1440px
- **Ultrawide**: 2560px
## Elevation & Depth
### Shadows
- **Sm**: 0 1px 2px rgba(20,28,36,0.06)
- **Md**: 0 14px 36px rgba(20,28,36,0.10)
- **Lg**: 0 30px 80px rgba(20,28,36,0.14)
## Shapes
### Rounded
- **None**: `0px`
- **Sm**: `8px`
- **Md**: `16px`
- **Lg**: `24px`
- **Full**: `9999px`
### Surfaces
- **Treatment**: cool white glass with a 155deg white-to-silver gradient and backdrop blur
- **Card Style**: white glass panes with an inset frost hairline, soft low-alpha shadow, and an optional gouache role edge-tab
- **Bg Pattern**: near-invisible cool light wells on a silver field, never decorative confetti
### Borders
- **Default Width**: 1px
- **Accent Width**: 5px
- **Style**: inset frost hairline on neutral panes; opaque gouache paint on semantic edge-tabs
- **Character**: no outlines; depth comes from material and shadow, paint marks only where a state owns the colour
## Components
### Composition
A three-zone product shell: a 78px monochrome instrument rail, a 248px context column, and a fluid work canvas of glass panes that reads like premium hardware software.
### Hierarchy
Let typography, glass elevation, and semantic paint edge-tabs create hierarchy; saturated colour is reserved for active decisions, states, and alerts only.
### Density
Moderate product density: compact controls, airy section spacing, and visible state metadata for a trusted professional tool.
### Signature
Semantic gouache tabs on frosted panes — small irregular radial paint marks clipped to a short edge strip on cards, buttons, and selected rows, each tab's colour naming exactly one product role.
## shadcn/ui Usage
When the target app uses shadcn/ui, copy DESIGN.md with shadcn instead of the plain DESIGN.md. It contains the same Katagami design-language source plus the shadcn/ui primitives, imports, theme variables, component recipes, and preview-shot guidance.
DESIGN.md with shadcn: `/language/en-019efa7a-31fd-7073-8ff2-b5fd93392826/DESIGN.with-shadcn.md`.
The shadcn page also exposes optional machine-readable files for automation, but the human-facing handoff is DESIGN.md with shadcn.
Install recommended primitives with `npx shadcn@latest add button card input textarea select dialog sheet tabs badge separator checkbox switch slider tooltip dropdown-menu table`.
Use these primitives in shadcn apps:
- button
- card
- input
- textarea
- select
- dialog
- sheet
- tabs
- badge
- separator
- checkbox
- switch
- slider
- tooltip
- dropdown-menu
- table
Implementation rule for agents: import shadcn primitives from `@/components/ui/*`, apply the generated CSS variables first, then compose the language-specific recipes from the companion MD. Katagami remains the source of truth; shadcn names are the implementation surface.
## Do's and Don'ts
- Do Bind each saturated colour to one named product role and keep the mapping fixed.
- Do Keep most surfaces cool silver or white before adding any paint.
- Do Place daubs as a legend that aligns to specific controls, rows, or modules.
- Do Build elevation from glass material and soft shadow, never from borders.
- Do Maintain WCAG-minded contrast for text and interactive states.
- Don't Do not spray daubs as confetti or assign a colour a role it does not own.
- Don't Do not give a card a single decorative accent edge with no product meaning.
- Don't Do not introduce grey borders, muddy washes, or neon glow.
- Don't Do not turn the page into a flat colour-theory worksheet.
- Don't Do not let semantic red or amber become visually primary.
### Accessibility
Charcoal #141C24 ink on white/silver panes clears WCAG AA; focus is a visible cyan outline plus a soft wash; role colour is always paired with a text label or pill, never colour alone; respects prefers-reduced-motion.
## Imagery Direction
### Pairs With
frostmark
### Summary
Subjects veiled behind layered translucent frosted-glass panes with crisp hairline seams and gouache daubs cresting the edges; cool charcoal-to-white tonal depth, premium hardware and optical-glass subjects.
### Subjects
- premium audio control surfaces
- optical glass and brushed metal hardware
- instrument panels
- studio monitoring rigs
### Usage
Full-bleed landing hero in the Frostmark technique; the daub palette stays a restrained accent. Avoid decorative rainbow art and neon glow.
```json
{
"$schema": "https://ui.shadcn.com/schema/registry-item.json",
"name": "vellum",
"type": "registry:theme",
"title": "Vellum shadcn Theme",
"cssVars": {
"theme": {},
"light": {
"background": "#EEF1F5",
"foreground": "#141C24",
"card": "#FFFFFF",
"card-foreground": "#141C24",
"popover": "#FFFFFF",
"popover-foreground": "#141C24",
"primary": "#141C24",
"primary-foreground": "#ffffff",
"secondary": "#f4f4f5",
"secondary-foreground": "#111111",
"muted": "#59636F",
"muted-foreground": "#141C24",
"accent": "#FF6F5B",
"accent-foreground": "#ffffff",
"destructive": "#C9352A",
"border": "#D6DDE6",
"input": "#D6DDE6",
"ring": "#FF6F5B",
"chart-1": "#141C24",
"chart-2": "#f4f4f5",
"chart-3": "#FF6F5B",
"chart-4": "#6FA315",
"chart-5": "#C97E08",
"sidebar": "#FFFFFF",
"sidebar-foreground": "#141C24",
"sidebar-primary": "#141C24",
"sidebar-primary-foreground": "#ffffff",
"sidebar-accent": "#1E7FB8",
"sidebar-accent-foreground": "#ffffff",
"sidebar-border": "#D6DDE6",
"sidebar-ring": "#FF6F5B",
"radius": "16px"
},
"dark": {
"background": "#0f1115",
"foreground": "#f8fafc",
"card": "#181b22",
"card-foreground": "#f8fafc",
"popover": "#181b22",
"popover-foreground": "#f8fafc",
"primary": "#141C24",
"primary-foreground": "#ffffff",
"secondary": "#252a33",
"secondary-foreground": "#f8fafc",
"muted": "#252a33",
"muted-foreground": "#a1a1aa",
"accent": "#FF6F5B",
"accent-foreground": "#ffffff",
"destructive": "#C9352A",
"border": "#303642",
"input": "#303642",
"ring": "#FF6F5B",
"chart-1": "#141C24",
"chart-2": "#f4f4f5",
"chart-3": "#FF6F5B",
"chart-4": "#6FA315",
"chart-5": "#C97E08",
"sidebar": "#181b22",
"sidebar-foreground": "#f8fafc",
"sidebar-primary": "#141C24",
"sidebar-primary-foreground": "#ffffff",
"sidebar-accent": "#FF6F5B",
"sidebar-accent-foreground": "#ffffff",
"sidebar-border": "#303642",
"sidebar-ring": "#FF6F5B",
"radius": "16px"
}
},
"meta": {
"source": "katagami",
"languageId": "en-019efa7a-31fd-7073-8ff2-b5fd93392826",
"slug": "vellum",
"componentManifest": [
"button",
"card",
"input",
"textarea",
"select",
"dialog",
"sheet",
"tabs",
"badge",
"separator",
"checkbox",
"switch",
"slider",
"tooltip",
"dropdown-menu",
"table"
],
"installCommand": "npx shadcn@latest add button card input textarea select dialog sheet tabs badge separator checkbox switch slider tooltip dropdown-menu table",
"nativeTokenNames": {
"colors": [
"accent",
"accent_2",
"accent_3",
"accent_4",
"accent_5",
"bg",
"border",
"error",
"info",
"muted",
"on_accent",
"success",
"surface",
"surface_2",
"text",
"warning"
],
"typography": [
"base_size",
"body_font",
"google_fonts_url",
"heading_font",
"heading_transform",
"heading_weight",
"letter_spacing",
"line_height",
"mono_font",
"scale_ratio"
],
"radii": [
"full",
"lg",
"md",
"none",
"sm"
],
"shadows": [
"lg",
"md",
"sm"
],
"spacing": [
"base",
"scale"
],
"surfaces": [
"bg_pattern",
"card_style",
"treatment"
],
"borders": [
"accent_width",
"character",
"default_width",
"style"
],
"motion": [
"duration",
"easing",
"philosophy"
]
}
}
}
```The quick brown fox jumps
The quick brown fox jumps
The quick brown fox jumps
The quick brown fox jumps
Agent-generated
Keep Vellumand swap a palette and an art style onto it — the landing & dashboard recolor live. The Studio does the same with all three lanes free.
Copy this when the target app uses shadcn/ui. It packages the Katagami DESIGN.md context with the install list, theme variables, component recipes, preview-shot contract, and starter TSX in one Markdown companion.
npx shadcn@latest add button card input textarea select dialog sheet tabs badge separator checkbox switch slider tooltip dropdown-menu table:root {
--background: #EEF1F5;
--foreground: #141C24;
--card: #FFFFFF;
--card-foreground: #141C24;
--popover: #FFFFFF;
--popover-foreground: #141C24;
--primary: #141C24;
--primary-foreground: #ffffff;
--secondary: #f4f4f5;
--secondary-foreground: #111111;
--muted: #59636F;
--muted-foreground: #141C24;
--accent: #FF6F5B;
--accent-foreground: #ffffff;
--destructive: #C9352A;
--border: #D6DDE6;
--input: #D6DDE6;
--ring: #FF6F5B;
--chart-1: #141C24;
--chart-2: #f4f4f5;
--chart-3: #FF6F5B;
--chart-4: #6FA315;
--chart-5: #C97E08;
--sidebar: #FFFFFF;
--sidebar-foreground: #141C24;
--sidebar-primary: #141C24;
--sidebar-primary-foreground: #ffffff;
--sidebar-accent: #1E7FB8;
--sidebar-accent-foreground: #ffffff;
--sidebar-border: #D6DDE6;
--sidebar-ring: #FF6F5B;
--radius: 16px;
}
.dark {
--background: #0f1115;
--foreground: #f8fafc;
--card: #181b22;
--card-foreground: #f8fafc;
--popover: #181b22;
--popover-foreground: #f8fafc;
--primary: #141C24;
--primary-foreground: #ffffff;
--secondary: #252a33;
--secondary-foreground: #f8fafc;
--muted: #252a33;
--muted-foreground: #a1a1aa;
--accent: #FF6F5B;
--accent-foreground: #ffffff;
--destructive: #C9352A;
--border: #303642;
--input: #303642;
--ring: #FF6F5B;
--chart-1: #141C24;
--chart-2: #f4f4f5;
--chart-3: #FF6F5B;
--chart-4: #6FA315;
--chart-5: #C97E08;
--sidebar: #181b22;
--sidebar-foreground: #f8fafc;
--sidebar-primary: #141C24;
--sidebar-primary-foreground: #ffffff;
--sidebar-accent: #FF6F5B;
--sidebar-accent-foreground: #ffffff;
--sidebar-border: #303642;
--sidebar-ring: #FF6F5B;
--radius: 16px;
}
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import {
Card,
CardContent,
CardDescription,
CardFooter,
CardHeader,
CardTitle,
} from "@/components/ui/card";
import { Input } from "@/components/ui/input";
import { Tabs, TabsList, TabsTrigger } from "@/components/ui/tabs";
export function VellumShadcnKit() {
return (
<section className="grid gap-4 rounded-[var(--radius)] border bg-background p-4 text-foreground">
<div className="flex items-start justify-between gap-4">
<div>
<Badge variant="outline">shadcn/ui</Badge>
<h2 className="mt-3 text-2xl font-semibold tracking-tight">Vellum</h2>
<p className="mt-1 max-w-xl text-sm text-muted-foreground">
Use the Katagami registry theme, then compose these shadcn primitives
with the language-specific component recipes.
</p>
</div>
<Button>Apply theme</Button>
</div>
<Tabs defaultValue="components">
<TabsList>
<TabsTrigger value="components">Components</TabsTrigger>
<TabsTrigger value="states">States</TabsTrigger>
<TabsTrigger value="export">Export</TabsTrigger>
</TabsList>
</Tabs>
<Card>
<CardHeader>
<CardTitle>Component recipe</CardTitle>
<CardDescription>
Replace this starter content with the agent-authored product scene
from components.md and preview-shots.json.
</CardDescription>
</CardHeader>
<CardContent className="grid gap-3 sm:grid-cols-[1fr_auto]">
<Input defaultValue="Tokenized shadcn surface" aria-label="Recipe name" />
<Button variant="secondary">Preview state</Button>
</CardContent>
<CardFooter className="justify-between">
<Badge>Ready</Badge>
<Button variant="outline">Copy recipe</Button>
</CardFooter>
</Card>
</section>
);
}
{
"$schema": "https://ui.shadcn.com/schema/registry-item.json",
"name": "vellum",
"type": "registry:theme",
"title": "Vellum",
"description": "Cool frosted-glass product console; silver panes, charcoal ink, five gouache daub accents bound to product roles. Borderless, soft glass shadows, 16px radius.",
"cssVars": {
"theme": {
"font-sans": "Inter, system-ui, sans-serif",
"font-heading": "Instrument Sans, Inter, sans-serif",
"font-mono": "IBM Plex Mono, ui-monospace, monospace",
"radius": "16px"
},
"light": {
"background": "#EEF1F5",
"foreground": "#141C24",
"card": "#FFFFFF",
"card-foreground": "#141C24",
"popover": "#FFFFFF",
"popover-foreground": "#141C24",
"primary": "#141C24",
"primary-foreground": "#FFFFFF",
"secondary": "#F6F8FB",
"secondary-foreground": "#141C24",
"muted": "#F6F8FB",
"muted-foreground": "#59636F",
"accent": "#FF6F5B",
"accent-foreground": "#FFFFFF",
"destructive": "#C9352A",
"destructive-foreground": "#FFFFFF",
"border": "#D6DDE6",
"input": "#D6DDE6",
"ring": "#2FA9E8",
"chart-1": "#FF6F5B",
"chart-2": "#2FA9E8",
"chart-3": "#9CCB2E",
"chart-4": "#F4A621",
"chart-5": "#7C6CF0",
"radius": "16px"
},
"dark": {
"background": "#11161C",
"foreground": "#EAEFF4",
"card": "#181F27",
"card-foreground": "#EAEFF4",
"popover": "#181F27",
"popover-foreground": "#EAEFF4",
"primary": "#EAEFF4",
"primary-foreground": "#11161C",
"secondary": "#1F2832",
"secondary-foreground": "#EAEFF4",
"muted": "#1F2832",
"muted-foreground": "#9BA6B2",
"accent": "#FF6F5B",
"accent-foreground": "#11161C",
"destructive": "#E0584D",
"destructive-foreground": "#11161C",
"border": "#2A3440",
"input": "#2A3440",
"ring": "#2FA9E8",
"chart-1": "#FF8A78",
"chart-2": "#5DC2F2",
"chart-3": "#B6E84C",
"chart-4": "#FFC04D",
"chart-5": "#9A8CF6",
"radius": "16px"
}
},
"visualProfile": {
"material": "frosted-glass",
"surface": "white pane on cool silver field, 155deg white-to-silver gradient",
"borders": "none; 1px inset frost hairline (#D6DDE6) instead of outlines",
"borderTreatment": "hairline-inset",
"radius": 16,
"radiusScale": [8, 16, 24, 9999],
"shadow": "soft low-alpha glass: 0 14px 36px rgba(20,28,36,0.10)",
"elevation": "material-and-shadow",
"accentUsage": "five gouache daubs as semantic edge-tabs and focus washes; each colour owns one role",
"ground": "light",
"focusRing": "cyan outline + soft radial colour wash",
"motion": "180ms cubic-bezier(0.2,0.8,0.2,1), material lift only"
}
}
# Vellum shadcn/ui Components
Artifact: `component-recipes-v1`
Author: `katagami-ui-projection`
Language ID: `en-019efa7a-31fd-7073-8ff2-b5fd93392826`
Slug: `vellum`
## Intent
A cool frosted-glass product console where silver panes stay quiet and a single gouache daub speaks for each state — every saturated colour bound to one named product role, never decoration.
## Required primitives
- button
- card
- input
- textarea
- select
- dialog
- sheet
- tabs
- badge
- separator
- checkbox
- switch
- slider
- tooltip
- dropdown-menu
- table
Install with `npx shadcn@latest add button card input textarea select dialog sheet tabs badge separator checkbox switch slider tooltip dropdown-menu table`.
## Token cues
Colors:
{
"bg": "#EEF1F5",
"surface": "#FFFFFF",
"surface_2": "#F6F8FB",
"text": "#141C24",
"muted": "#59636F",
"border": "#D6DDE6",
"accent": "#FF6F5B",
"accent_2": "#2FA9E8",
"accent_3": "#9CCB2E",
"accent_4": "#F4A621",
"accent_5": "#7C6CF0",
"on_accent": "#FFFFFF",
"success": "#6FA315",
"warning": "#C97E08",
"error": "#C9352A",
"info": "#1E7FB8"
}
Typography:
{
"base_size": "17px",
"body_font": "Inter",
"heading_font": "Instrument Sans",
"mono_font": "IBM Plex Mono",
"heading_weight": "700",
"heading_transform": "none",
"letter_spacing": "-0.022em",
"line_height": 1.55,
"scale_ratio": 1.22,
"google_fonts_url": "https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=Instrument+Sans:wght@500;600;700&family=Inter:wght@400;500;600;700&display=swap"
}
## Visual character to preserve
- Make the source language's structural identity visible in every component state.
## ShadSync visual profile
{
"family": "system",
"material": "flat",
"contour": "default",
"border": "solid",
"underlay": false,
"grain": false,
"stickerBadges": false,
"motion": "lift",
"density": "balanced",
"accents": [
"primary",
"accent",
"secondary",
"muted"
]
}
## Signature component recipes
### Button
Use `Button` for primary, secondary, outline, and ghost actions. Primary actions must expose the language's strongest contrast pair, while secondary and ghost actions should preserve the surface treatment instead of falling back to default neutral SaaS styling.
### Card
Use `Card`, `CardHeader`, `CardContent`, `CardFooter`, and `CardAction` as the main composition frame. Cards should demonstrate the language's surface, border, hierarchy, and density rules rather than appearing as generic rounded rectangles.
### Input and Textarea
Use `Input` and `Textarea` with visible focus rings, field labels, validation states, and the language's rhythm. Forms should show real product content, not placeholder-only controls.
### Select, Tabs, and Table
Use `Select`, `Tabs`, and `Table` to prove navigation, filtering, and dense data states. The table should show row rhythm, separators, hover/focus states, and an empty or status state when the language calls for it.
### Dialog and Sheet
Use `Dialog` for centered decisions and `Sheet` for contextual editing. Both should inherit the language's spacing, border, overlay, and motion rules.
## Preview shots
- `application-shell`: dashboard or workspace shell with navigation, cards, forms, and state badges.
- `detail-editor`: focused editing flow using input, textarea, select, switch/checkbox, dialog or sheet, and action buttons.
- `data-operations`: table-heavy operational view with tabs, dropdown menu affordances, badges, and destructive/empty states.
- Each preview shot must include a renderable `scene` payload with concrete headline, description, actions, and rows/fields/stats for the UI preview.
## Implementation contract
- Start from local `ui/src/components/ui` shadcn-style primitives; do not create a second component system.
- Apply `/katagami/shadcn/vellum/registry-theme.json` variables, then use these recipes for composition and state design.
- Preserve Katagami token names as source metadata; shadcn semantic names are only the export surface.
- Do: Bind each saturated colour to one named product role and keep the mapping fixed.; Keep most surfaces cool silver or white before adding any paint.; Place daubs as a legend that aligns to specific controls, rows, or modules.; Build elevation from glass material and soft shadow, never from borders.; Maintain WCAG-minded contrast for text and interactive states.
- Do not: Do not spray daubs as confetti or assign a colour a role it does not own.; Do not give a card a single decorative accent edge with no product meaning.; Do not introduce grey borders, muddy washes, or neon glow.; Do not turn the page into a flat colour-theory worksheet.; Do not let semantic red or amber become visually primary.
## Copy-paste component example
This generated starter proves the import shape. Production Katagami agents should replace it with a language-specific product composition.
```tsx
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import {
Card,
CardContent,
CardDescription,
CardFooter,
CardHeader,
CardTitle,
} from "@/components/ui/card";
import { Input } from "@/components/ui/input";
import { Tabs, TabsList, TabsTrigger } from "@/components/ui/tabs";
export function VellumShadcnKit() {
return (
<section className="grid gap-4 rounded-[var(--radius)] border bg-background p-4 text-foreground">
<div className="flex items-start justify-between gap-4">
<div>
<Badge variant="outline">shadcn/ui</Badge>
<h2 className="mt-3 text-2xl font-semibold tracking-tight">Vellum</h2>
<p className="mt-1 max-w-xl text-sm text-muted-foreground">
Use the Katagami registry theme, then compose these shadcn primitives
with the language-specific component recipes.
</p>
</div>
<Button>Apply theme</Button>
</div>
<Tabs defaultValue="components">
<TabsList>
<TabsTrigger value="components">Components</TabsTrigger>
<TabsTrigger value="states">States</TabsTrigger>
<TabsTrigger value="export">Export</TabsTrigger>
</TabsList>
</Tabs>
<Card>
<CardHeader>
<CardTitle>Component recipe</CardTitle>
<CardDescription>
Replace this starter content with the agent-authored product scene
from components.md and preview-shots.json.
</CardDescription>
</CardHeader>
<CardContent className="grid gap-3 sm:grid-cols-[1fr_auto]">
<Input defaultValue="Tokenized shadcn surface" aria-label="Recipe name" />
<Button variant="secondary">Preview state</Button>
</CardContent>
<CardFooter className="justify-between">
<Badge>Ready</Badge>
<Button variant="outline">Copy recipe</Button>
</CardFooter>
</Card>
</section>
);
}
```
## Layout notes
{
"grid": "Three-zone shell: 78px utility rail, 248px context column, fluid work canvas; twelve-column canvas on desktop.",
"whitespace": "Cool and architectural — generous outer gutters, tight internal control spacing, no loose decorative gaps.",
"density": "Compact controls inside airy sections; metadata in mono small-caps.",
"responsive": "Below 900px the rail collapses to a horizontal strip, the context column stacks, grids fold to a single column with minmax(0,1fr); only the landing hero is full-bleed.",
"breakpoints": {
"mobile": "390px",
"tablet": "768px",
"desktop": "1440px",
"ultrawide": "2560px"
}
}
{
"artifact": "katagami:shadcn-preview-shots",
"version": "preview-shots-v1",
"generator": "katagami-ui-compatibility-projection",
"generatedBy": "katagami-ui-projection",
"requiresVisualProfile": true,
"schema": "katagami:shadcn-preview-shots/renderable-v1",
"renderable": true,
"language": {
"id": "en-019efa7a-31fd-7073-8ff2-b5fd93392826",
"name": "Vellum",
"slug": "vellum"
},
"installCommand": "npx shadcn@latest add button card input textarea select dialog sheet tabs badge separator checkbox switch slider tooltip dropdown-menu table",
"primitives": [
"button",
"card",
"input",
"textarea",
"select",
"dialog",
"sheet",
"tabs",
"badge",
"separator",
"checkbox",
"switch",
"slider",
"tooltip",
"dropdown-menu",
"table"
],
"identityNotes": [],
"visualProfile": {
"family": "system",
"material": "flat",
"contour": "default",
"border": "solid",
"underlay": false,
"grain": false,
"stickerBadges": false,
"motion": "still",
"density": "balanced",
"accents": [
"primary",
"accent",
"secondary",
"muted"
]
},
"shots": [
{
"id": "application-shell",
"title": "Application shell",
"viewport": "desktop",
"primitives": [
"button",
"card",
"input",
"select",
"tabs",
"badge",
"separator",
"table"
],
"composition": "A real product workspace with navigation, summary cards, filtering controls, and one dense content region.",
"mustShow": [
"primary and secondary actions",
"card hierarchy",
"filterable state",
"table or list density"
],
"avoid": [
"component inventory walls",
"placeholder-only content",
"generic rounded SaaS chrome"
],
"scene": {
"eyebrow": "workspace spread",
"headline": "Vellum launch room",
"description": "A product team workspace where navigation, filters, metrics, and dense rows carry the language's visible structure.",
"primaryAction": "Apply theme",
"secondaryAction": "Review states",
"stats": [
{
"label": "components",
"value": "16",
"tone": "accent"
},
{
"label": "states",
"value": "ready"
},
{
"label": "density",
"value": "balanced",
"tone": "warning"
}
],
"rows": [
{
"label": "Primary flow",
"value": "mapped",
"status": "active"
},
{
"label": "Token coverage",
"value": "semantic",
"status": "synced"
},
{
"label": "Responsive proof",
"value": "queued",
"status": "review"
}
],
"statuses": [
"Active",
"Synced",
"Draft"
]
}
},
{
"id": "detail-editor",
"title": "Detail editor",
"viewport": "tablet",
"primitives": [
"button",
"card",
"input",
"textarea",
"select",
"checkbox",
"switch",
"slider",
"dialog",
"sheet"
],
"composition": "A focused editing flow with form fields, validation, confirmation, and a contextual side panel.",
"mustShow": [
"focus ring",
"error or destructive state",
"dialog or sheet treatment",
"written guidance content"
],
"avoid": [
"unstyled browser controls",
"floating cards inside cards",
"missing labels"
],
"scene": {
"eyebrow": "editing flow",
"headline": "Language recipe editor",
"description": "A focused form proving labels, validation, toggles, panel rhythm, and action hierarchy.",
"primaryAction": "Save recipe",
"secondaryAction": "Open sheet",
"fields": [
{
"label": "Component family",
"value": "Narrative cards"
},
{
"label": "State treatment",
"value": "Visible focus + validation"
},
{
"label": "Motion",
"value": "Small lift, no opacity-only fade"
}
],
"statuses": [
"Focus",
"Invalid",
"Confirmed"
]
}
},
{
"id": "data-operations",
"title": "Data operations",
"viewport": "mobile",
"primitives": [
"button",
"tabs",
"badge",
"dropdown-menu",
"table",
"tooltip",
"separator"
],
"composition": "A compact operational view proving row rhythm, stacked actions, menu states, badges, and empty/destructive states.",
"mustShow": [
"responsive reflow",
"dense row styling",
"menu affordance",
"status badge system"
],
"avoid": [
"desktop-only tables",
"text overflow",
"default shadcn spacing without Katagami character"
],
"scene": {
"eyebrow": "operations",
"headline": "Compact review queue",
"description": "A narrow viewport scene with rows, menus, tooltips, badges, and destructive affordances.",
"primaryAction": "Resolve",
"secondaryAction": "Filter",
"rows": [
{
"label": "Button hierarchy",
"value": "approved",
"status": "ok"
},
{
"label": "Table rhythm",
"value": "needs pass",
"status": "watch"
},
{
"label": "Empty state",
"value": "designed",
"status": "done"
}
],
"statuses": [
"Queued",
"Blocked",
"Done"
]
}
}
],
"componentRecipes": [
{
"primitive": "button",
"intent": "Prove action hierarchy, focus, disabled, and destructive states."
},
{
"primitive": "card",
"intent": "Carry the language surface, border, elevation, and density rules."
},
{
"primitive": "input",
"intent": "Show labels, focus rings, validation, and spacing rhythm."
},
{
"primitive": "textarea",
"intent": "Show longer guidance, validation copy, and writing density."
},
{
"primitive": "select",
"intent": "Show filtering, selection contrast, and menu trigger styling."
},
{
"primitive": "dialog",
"intent": "Show centered decision states and overlay treatment."
},
{
"primitive": "sheet",
"intent": "Show contextual side panels and responsive editing."
},
{
"primitive": "tabs",
"intent": "Show navigational structure and active/inactive contrast."
},
{
"primitive": "badge",
"intent": "Show compact status vocabulary and semantic colors."
},
{
"primitive": "separator",
"intent": "Show section rhythm without generic gray dividers."
},
{
"primitive": "checkbox",
"intent": "Show binary selection with visible focus and checked states."
},
{
"primitive": "switch",
"intent": "Show settings toggles and on/off contrast."
},
{
"primitive": "slider",
"intent": "Show numeric adjustment with track/thumb styling."
},
{
"primitive": "tooltip",
"intent": "Show concise explanation styling above compact controls."
},
{
"primitive": "dropdown-menu",
"intent": "Show action menus, destructive items, and grouped choices."
},
{
"primitive": "table",
"intent": "Show dense operational data, separators, row states, and responsive behavior."
}
],
"qualityRules": {
"do": [
"Bind each saturated colour to one named product role and keep the mapping fixed.",
"Keep most surfaces cool silver or white before adding any paint.",
"Place daubs as a legend that aligns to specific controls, rows, or modules.",
"Build elevation from glass material and soft shadow, never from borders.",
"Maintain WCAG-minded contrast for text and interactive states."
],
"dont": [
"Do not spray daubs as confetti or assign a colour a role it does not own.",
"Do not give a card a single decorative accent edge with no product meaning.",
"Do not introduce grey borders, muddy washes, or neon glow.",
"Do not turn the page into a flat colour-theory worksheet.",
"Do not let semantic red or amber become visually primary."
]
}
}