---
name: anthropic-design-reference
provider: DesignSkill (https://designskill.dev)
reference: anthropic.com
source_url: https://www.anthropic.com/
tool: designskill-extract/3.2.0
extracted_at: 2026-07-27T08:46:47.240Z
mode: full-render
classification: reference_only
---

# Anthropic — Design Reference (measured)

Measured design tokens extracted from `https://www.anthropic.com/` by designskill-extract/3.2.0.
Every value below was observed in the live page (×N = observation count). Values not listed were **not observed** — do not invent them.
This document is `reference_only`: an analysis of a third-party site, not a license to its brand assets.

## Overview

- Extraction mode: **full-render** (viewports 390/768/1440px × light/dark), 1 page(s), 373 observation records.
- Primary action color observed as `#c6613f` (basis: inferred, confidence 0.78).
- Dominant font family: **Anthropic Sans** (×870; secondary Anthropic Serif ×82).
- Type scale observed at 8 sizes from 12px to 61px.
- Corner radius values in use: 8px, 4px, 24px, 16px.
- Not observed in this extraction: forms, cards, badges.

## Colors

### Role Tokens

Semantic roles inferred from observed usage. `basis` tells how the role was established (declared CSS var > cross-validated > inferred).

| Token | Value | Basis | Confidence | Observed |
|---|---|---|---|---|
| `{color.primary}` | `#c6613f` | inferred | 0.78 | ×3 |
| `{color.background}` | `#faf9f5` | cross-validated | 0.93 | ×306 |
| `{color.ink}` | `#141413` | cross-validated | 0.94 | ×403 |
| `{color.muted}` | `#999999` | inferred | 0.57 | ×2 |
| `{color.surface}` | `#f0eee6` | inferred | 0.7 | ×60 |
| `{color.accent}` | `#0082f3` | inferred | 0.57 | ×2 |

### Observed Palette

Full measured palette ordered by usage share. `Used in` lists the CSS properties the color appeared on.

| Hex | Share | Used in | Observed |
|---|---|---|---|
| `#b0aea5` | 34.3% | color, fill | ×520 (cross-validated, 0.94) |
| `#141413` | 26.6% | background-color, border-color, color, --swatch--slate-dark | ×403 (cross-validated, 0.94) |
| `#faf9f5` | 20.2% | background-color, color, --swatch--ivory-light, border-color, box-shadow | ×306 (cross-validated, 0.93) |
| `#000000` | 5.9% | background-color, border-color, color, box-shadow | ×90 (inferred, 0.62) |
| `#f0eee6` | 4.0% | color, --swatch--ivory-medium, background-color, --swatch--ivory-dark | ×60 (cross-validated, 0.91) |
| `#141413` | 2.4% | border-color | ×36 (observed, 0.75) |
| `#e3dacc` | 1.7% | --swatch--oat, background-color | ×25 (cross-validated, 0.9) |
| `#222222` | 0.6% | color, background-color, border-color | ×9 (inferred, 0.58) |
| `#dddddd` | 0.5% | background-color, border-color | ×7 (inferred, 0.58) |
| `#758696` | 0.4% | border-color | ×6 (inferred, 0.58) |
| `#3d3d3a` | 0.4% | background-color, border-color, --swatch--slate-medium | ×6 (inferred, 0.58) |
| `#333333` | 0.3% | color, box-shadow | ×5 (inferred, 0.58) |
| `#87867f` | 0.3% | border-color, background-color, --swatch--cloud-dark | ×4 (inferred, 0.57) |
| `#d97757` | 0.4% | background-color, --swatch--clay | ×6 (inferred, 0.58) |
| `#cccccc` | 0.5% | border-color, background-color | ×8 (inferred, 0.58) |
| `#c6613f` | 0.2% | background-color, --swatch--accent | ×3 (inferred, 0.57) |

## Typography

### Font Families

| Family | Observed |
|---|---|
| `Anthropic Sans` | ×870 |
| `Anthropic Serif` | ×82 |
| `Anthropic Mono` | ×38 |
| `Tiempos Text` | ×3 |
| `sans-serif` | ×1 |
| `monospace` | ×1 |

Use **Anthropic Sans** as the default family — it accounts for the overwhelming majority of observed text nodes.

### Type Scale

| Token | Size | Observed |
|---|---|---|
| `{type.display}` | 61px | ×28 |
| `{type.h1}` | 48px | ×28 |
| `{type.h2}` | 24px | ×38 |
| `{type.h3}` | 20px | ×49 |
| `{type.body-lg}` | 18px | ×34 |
| `{type.body}` | 16px | ×166 |
| `{type.body-sm}` | 15px | ×52 |
| `{type.caption}` | 12px | ×588 |

The most frequently observed size is **12px** (×588) — treat it as the default body size.

## Spacing

| Value | Observed |
|---|---|
| `8px` | ×732 |
| `4px` | ×504 |
| `16px` | ×120 |
| `12px` | ×108 |
| `32px` | ×27 |
| `10px` | ×19 |
| `5px` | ×10 |
| `20px` | ×8 |
| `15px` | ×4 |
| `40px` | ×4 |
| `48px` | ×4 |
| `61px` | ×4 |

## Shape (Border Radius)

| Value | Observed |
|---|---|
| `8px` | ×82 |
| `4px` | ×32 |
| `24px` | ×24 |
| `16px` | ×12 |

## Elevation

| Shadow | Observed |
|---|---|
| `#000000` | ×45 |
| `0 2px 2px #00000003,0 4px 4px #00000005,0 16px 24px #0000000a` | ×8 |
| `#ffffff` | ×5 |
| `#080808` | ×4 |
| `0 0 #0000,0 0 #0000,0 0 #0000` | ×2 |
| `#333333` | ×1 |

## Motion

| Duration | Observed |
|---|---|
| `0.2s` | ×184 |
| `0.8s` | ×60 |
| `.2s` | ×30 |
| `.4s` | ×3 |

## Components

Measured computed styles of representative components (desktop viewport).

| Component | Measured spec | Samples |
|---|---|---|
| button.primary | bg `#faf9f5` · text `#141413` · radius `0px` · padding `12px 31.4776px` · font `18px/600` | ×2 |
| nav | bg `#f0eee6` · height `68px` · position `relative` · link `#141413` | — |

### Interaction States (observed)

| State | Property | From | To |
|---|---|---|---|
| hover | outline-width | `2px` | `0px` |

## Accessibility (WCAG Contrast)

| FG | BG | Ratio | AA | Source |
|---|---|---|---|---|
| `#b0aea5` | `#141413` | 8.29 | pass | observed ×258 |
| `#141413` | `#f0eee6` | 15.87 | pass | observed ×134 |
| `#faf9f5` | `#141413` | 17.5 | pass | observed ×76 |
| `#141413` | `#faf9f5` | 17.5 | pass | observed ×9 |
| `#141413` | `#faf9f5` | 17.5 | pass | ink_on_background |
| `#ffffff` | `#c6613f` | 4.05 | fail | white_on_primary |
| `#999999` | `#faf9f5` | 2.7 | fail | muted_on_background |

2 measured pair(s) fail AA — if you reuse those pairs, adjust lightness until the ratio reaches 4.5:1.

## Usage Rules

### Do
- Use `{color.primary}` (`#c6613f`) for primary actions only — that is where it was observed.
- Default text pairing: `{color.ink}` (`#141413`) on `{color.background}` (`#faf9f5`).
- Set all text in `Anthropic Sans` (fallbacks only for glyph coverage).
- Pick corner radii from the measured set (8px, 4px, 24px, 16px) — no intermediate values were observed.
- Cite this file's token names (`{color.*}`, `{type.*}`) when generating UI so output stays traceable to observations.

### Don't
- Don't invent colors, sizes, shadows, or spacing not listed above — absence means *not observed*, and this document records observations only.
- Don't assume the missing blocks (forms, cards, badges) don't exist on the site — they were simply not captured in this run.
- Don't copy brand assets (logo, wordmark, imagery, copy) — `reference_only` covers measured style values, not brand identity.
- Treat `{color.muted}`, `{color.accent}` with caution — confidence below 0.6.

## Provenance

- Source: https://www.anthropic.com/ (1 page(s))
- Tool: designskill-extract/3.2.0 · extracted 2026-07-27T08:46:47.240Z
- Mode: full-render — 풀렌더 모드 — 3뷰포트 × 라이트/다크 computed style + 상태 관측.
- Blocks observed: 00, 01, 02, 03, 04, 05, 09, 10, 11, 12 · missing: forms, cards, badges
- Degraded stages (extraction failure ≠ design change — exclude from diffs): state-observation
- Warning: primary 불일치: static=#d97757 vs render=#c6613f — render 채택

---

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