---
version: alpha
name: shadcn/ui
description: Light design system extracted from ui.shadcn.com (DOM-true values, Emblematic extractor 0.2.0, 2026-11-12).
colors:
  background: "#FFFFFF"
  surface: "#F5F5F5"
  on-surface-variant: "#737373"
  on-surface: "#000000"
  outline: "#E5E5E5"
  color-6: "#F5F5F580"
  neutral-950: "#0A0A0A"
  color-8: "#E5E5E580"
  neutral-900: "#171717"
  color-10: "#040404CC"
  neutral-700: "#404040"
  neutral-600: "#525252"
  primary: "#000000"
  on-primary: "#FAFAFA"
  background-dark: "#171717"
  on-surface-dark: "#FAFAFA"
  on-surface-variant-dark: "#A1A1A1"
  surface-dark: "#0A0A0A"
  primary-dark: "#E5E5E5"
  outline-dark: "#FFFFFF1A"
typography:
  display-lg:
    fontFamily: Geist
    fontSize: 48px
    fontWeight: 600
    lineHeight: 1.1
    letterSpacing: -0.05em
  body-md:
    fontFamily: Geist
    fontSize: 14px
    fontWeight: 400
    lineHeight: 1.429
  body-sm:
    fontFamily: Geist
    fontSize: 12px
    fontWeight: 500
    lineHeight: 1.333
    letterSpacing: 0.05em
  label-md:
    fontFamily: Geist
    fontSize: 14px
    fontWeight: 500
    lineHeight: 1.429
rounded:
  xs: 6px
  sm: 10px
  md: 18px
  lg: 22px
  xl: 24px
  full: 9999px
spacing:
  xxs: 4px
  xs: 6px
  sm: 8px
  md: 10px
  lg: 12px
  xl: 14px
  2xl: 16px
  3xl: 20px
  4xl: 24px
  base: 4px
  container: 1352px
components:
  button-primary:
    backgroundColor: "{colors.on-surface}"
    textColor: "#FAFAFA"
    rounded: "{rounded.full}"
    padding: 0px
    height: 35px
    typography: "{typography.label-md}"
  button-secondary:
    backgroundColor: "{colors.neutral-900}"
    textColor: "#FAFAFA"
    rounded: "{rounded.full}"
    padding: 0px
    height: 32px
    typography: "{typography.label-md}"
  card:
    backgroundColor: "{colors.background}"
    rounded: "{rounded.xl}"
    padding: 20px
  input:
    rounded: 0px
    padding: 4px
    height: 32px
---

# shadcn/ui

> Extracted from [https://ui.shadcn.com/](https://ui.shadcn.com/) on 2026-11-12 by Emblematic. Every value below was read from the rendered DOM (computed styles, `document.fonts`, and the fonts Chrome actually used to paint text), not estimated from pixels. When the YAML front matter and this prose disagree, the YAML wins. Copy values from this file exactly; don't transcribe them from memory. Don't copy logos, imagery, illustrations or marketing copy.

## Overview

shadcn/ui uses a light canvas (#FFFFFF) with a monochrome palette. Type is set in **Geist** (display + body), with 14px body text. Layout: 1352px container, top-sticky navigation, 3 sections. Built with next.js, tailwind, shadcn/ui, vercel.

## Colors

Area-weighted from painted backgrounds, text and borders on the 1440px light capture. Roles are inferred from usage (largest background, most text, interactive fills). Every hex is an exact computed value; a role marked *unverified* is a best guess that has not passed review, so its canonical token (e.g. `primary`) is left out of the front matter.

| Token | Hex | OKLCH | Role | Share of paint | CSS variable |
|---|---|---|---|---|---|
| `background` | `#FFFFFF` | 1 0 0 | bg | 58.7% | `--background` |
| `surface` | `#F5F5F5` | 0.97 0 155.5 | surface | 11.9% | `--color-neutral-100` |
| `on-surface-variant` | `#737373` | 0.556 0 129.6 | muted | 4.6% | `--muted-foreground` |
| `on-surface` | `#000000` | 0 0 0 | text | 3.2% | `--foreground` |
| `outline` | `#E5E5E5` | 0.922 0 241.7 | border | 0.10% | `--border` |
| `color-6` | `#F5F5F580` (on bg `#FAFAFA`) | 0.97 0 112.9 | other | 9.8% | — |
| `neutral-950` | `#0A0A0A` | 0.145 0 129.6 | other | 4.2% | `--color-neutral-950` |
| `color-8` | `#E5E5E580` (on bg `#F2F2F2`) | 0.922 0 112.8 | other | 3.9% | — |
| `neutral-900` | `#171717` | 0.205 0 176.3 | other | 1.7% | `--color-neutral-900` |
| `color-10` | `#040404CC` (on bg `#363636`) | 0.102 0 114.9 | other | 0.93% | — |
| `neutral-700` | `#404040` | 0.371 0 129.6 | other | 0.26% | `--color-neutral-700` |
| `neutral-600` | `#525252` | 0.439 0 129.6 | other | 0.20% | `--color-neutral-600` |

Contrast: text on background 21:1, muted text 4.73:1, accent 21:1.

Gradients in use: `linear-gradient(lab(100 0 0) 0%, lab(96.52 -0.0000298023 0.0000119209) 50%, rgba(0, 0, 0, 0) 100%)`; `linear-gradient(to top, lab(100 0 0) 0%, oklab(0.969998 -0.00000959635 0.0000227094 / 0.8) 50%, rgba(0, 0, 0, 0) 100%)`.

The site responds to `prefers-color-scheme: dark`; the `-dark` tokens hold the dark-mode roles.

## Typography

| Family | Role | Weights | Share of text | Source |
|---|---|---|---|---|
| **Geist** | display, body | 400, 500, 600 | 100.0% | webfont |

Declared in `@font-face` but not used to paint text on this page: Geist Mono, Roboto, Noto Sans, Noto Serif, EB Garamond, Inter. Don't treat these as the page's fonts.

Scale (px): 12, 14, 16, 18, 30, 48. Effective ratio ≈ 1.361 (close to a perfect fourth). Body 14px at line-height 1.429; display 48px with tracking -0.05em. Headings are sentence case. On a 390px viewport the body is 16px and display 30px.

## Layout

Spacing follows a 4px base unit; the most used steps are 4, 6, 8, 10, 12, 14, 16, 20, 24px. Content sits in a 1352px container on a 4-column grid. Text density 0.139 (text area / page area).

Section order (desktop). Kinds below the review threshold are shown as *section*:

1. **nav** (64px, bg #FFFFFF)
2. **nav** (64px, bg #FFFFFF)
3. **footer** — “The Foundation for your Design System” (1829px, bg #FFFFFF)

## Elevation & Depth

Style: subtle. Most used shadows:

- `rgba(0, 0, 0, 0.1) 0px 1px 3px 0px, rgba(0, 0, 0, 0.1) 0px 1px 2px -1px`

## Shapes

Dominant corner radius is a full pill; radii in use: 6px, 10px, 18px, 22px, 24px, pill. Borders: hairline (1px).

## Components

- **button-primary**: backgroundColor `#000000`, textColor `#FAFAFA`, rounded `9999px`, padding `0px 12px`, height `35px`, fontFamily `Geist`, fontSize `14px`, fontWeight `500`, shadow `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0` (e.g. “Get Started”)
- **button-secondary**: backgroundColor `#171717`, textColor `#FAFAFA`, rounded `9999px`, padding `0px 12px`, height `32px`, fontFamily `Geist`, fontSize `14px`, fontWeight `500` (e.g. “View Full Report”)
- **card**: rounded `24px`, padding `20px`, backgroundColor `#FFFFFF`, shadow `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, oklab(0.145 -0.000`
- **input**: rounded `0px`, height `32px`, padding `4px 6px`

## Do's and Don'ts

- Do keep the palette monochrome; there is no chromatic brand accent on the page.
- Do set body copy in Geist at 14px / 1.429.
- Do tighten large headlines (-0.05em at 48px).
- Don't introduce font weights beyond 400, 500, 600.
- Do keep corners at pill for most controls, and use the larger radii only for cards and media.
- Do snap spacing to multiples of 4px.
- Don't copy this site's logos, illustrations, photography or copy; use the system, not the brand assets.

## Provenance

Spec v2, extractor 0.2.0. Render quality: **ok**. Vision pass: not run. Fields below confidence 0.7 are hedged or left out above: `imagery.dominant_colors`, `layout.columns`, `layout.hero`, `layout.section_count`, `space.section_padding_px`. Full per-field provenance is in `spec.json`.