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Extracted · 10 sections · 20 colors · grade B

claude.com

Accent #c6613f · anthropicSans — chaque valeur ci-dessous est mesurée via getComputedStyle(), jamais affirmée à la main.

colors

faces

shadows

keyframes

Get DESIGN.md tokens.json Repeindre ce design

rendu réel · source de vérité

claude.com is built on a warm, off-white canvas (rgb(250, 249, 245)). The system uses rgb(250, 249, 245) as a near-neutral accent (low saturation). Sharp 0px corners on CTAs — architectural restraint, engineering precision alongside editorial serif type (anthropicSerif) — voice of authority. A layered elevation system (6 distinct shadows) building a clear front-to-back hierarchy. Motion is a first-class concern — 19 keyframe animations plus transition-driven interactions.

Color — roles, semantics & the full census

20 colors measured · click any swatch to copy

Canvas

#faf9f5

AAA 17.5:1

Ink

#141413

AAA 17.5:1

Accent

#faf9f5

Fail 1:1

Line

#30302e

AAA 12.55:1

Semantic states

error#bf4d43

1 semantic role found.

20 colors mined from the live renderexpand

Type — the ladder, in the real face

5 roles · rendered live in the real anthropicSans (captured woff2) · lines are editable, click any spec to copy

display xl

display-xl72px · 330

display md

display-md30px · 400 · ×2.40

body

body12px · 400 · ×2.50

button

button17px · 600 · ×0.71

mono

mono12px · 400 · ×1.42

Spacing & radius, made spatial

9 spacing steps · 7 radii · bars are exact px widths

Spacing scale

xxs · 2px

xs · 16px

sm · 24px

md · 32px

base · 48px

lg · 56px

xl · 64px

2xl · 72px

3xl · 80px

Radius

none
0px

xs
4px

sm
8px

md
12px

lg
16px

xl
32px

full
9999px

Depth — elevation is extracted, not invented

6 box-shadows measured on the live page · click a tile to copy its raw value

shadow-1

shadow-2

shadow-3

shadow-4

shadow-5

Motion — easings, transitions & live keyframes

8 easing curves · 19 keyframes · hover a tile to preview

Easing & transitions

transition-2ease-in

transition-4cubic-bezier(0.165, 0.84, 0.44, 1)

ease-in-out-quartcubic-bezier(.77,0,.175,1)

ease-out-quartcubic-bezier(.165,.84,.44,1)

ease-in-quartcubic-bezier(.895,.03,.685,.22)

ease-in-out-expocubic-bezier(1,0,0,1)

ease-in-out-power3cubic-bezier(.645,.045,.355,1)

ease-out-power2cubic-bezier(.25,1,.5,1)

19 keyframe animations extracted

NavMobile-module-scss-module__twGYTa__panelOpen

NavMobile-module-scss-module__twGYTa__panelClose

NavMobile-module-scss-module__twGYTa__itemFadeUp

NavBar-module-scss-module__s3E3Dq__navSlideDown

PromptCards-module-scss-module__HcTnea__tabFadeUp

MediaTabs-module-scss-module__M-mPca__tabFadeUp

Pricing-module-scss-module__GLAe0a__cardRaise

Marquee-module-scss-module__-zurhq__marquee

LetterGrid-module-scss-module__R6_SpW__hudFadeIn

TypewriterWord-module-scss-module__sRUGCG__blink

AppShell-module-scss-module__F71GCG__row-dot-wave

AppShell-module-scss-module__F71GCG__shell-spark-spin

Components — the closed vocabulary

16 component families · 56 variants counted on the live DOM

Component	Variants found
buttons	×10
links	×8
accordion	×7
nav Links	×5
cards	×4
tabs	×4
cta Banner	×4
captions	×3
heading H2	×2
heading H3	×2
price Tag	×2
inputs	×1
status Badge	×1
footer Links	×1
heading H1	×1
divider	×1

Component style specs (§4)expand

Buttons

Ghost

Background: transparent
Text: #30302e {colors.hairline}
Padding: 8px 0px
Radius: 0px
Font: 15px weight 400
Use: Subtle action, toolbar, nav button
Focus: color: rgb(46, 46, 44), border: 0px none rgb(46, 46, 44), borderColor: rgb(46, 46, 44)

Light / Invert

Background: #faf9f5 {colors.primary}
Text: #5e5d59
Padding: 8px 12px
Radius: 8px
Shadow: rgb(209, 207, 197) 0px 0px 0px 1px
Font: 15px weight 400
Use: Bright CTA on dark sections
Focus: color: rgb(46, 46, 44), border: 0px none rgb(46, 46, 44), borderColor: rgb(46, 46, 44)

Dark / Solid

Background: #141413 {colors.primary-hover}
Text: #faf9f5 {colors.primary}
Padding: 8px 12px
Radius: 8px
Font: 15px weight 400
Use: Solid dark CTA
Focus: color: rgb(46, 46, 44), border: 0px none rgb(46, 46, 44), borderColor: rgb(46, 46, 44)

Light / Invert

Background: #faf9f5 {colors.primary}
Text: #141413 {colors.primary-hover}
Padding: 0px 20px
Radius: 9.6px
Border: 1px solid rgb(209, 207, 197)
Font: 17px weight 600
Use: Bright CTA on dark sections
Focus: color: rgb(46, 46, 44), border: 0px none rgb(46, 46, 44), borderColor: rgb(46, 46, 44)

Ghost

Background: transparent
Text: #141413 {colors.primary-hover}
Padding: 0px 24px
Radius: 8px
Font: 14px weight 500
Use: Subtle action, toolbar, nav button
Focus: color: rgb(46, 46, 44), border: 0px none rgb(46, 46, 44), borderColor: rgb(46, 46, 44)

Dark / Solid

Background: #141413 {colors.primary-hover}
Text: #faf9f5 {colors.primary}
Padding: 8px 16px
Radius: 8px
Font: 16px weight 500
Use: Solid dark CTA
Focus: color: rgb(46, 46, 44), border: 0px none rgb(46, 46, 44), borderColor: rgb(46, 46, 44)

Icon Button

Background: #c6613f

Layout — structure & dimensions

4 layout metrics measured

max Width1440px

header Height84px

sidebar Width0px

container Padding0px

Responsive — real breakpoints

12 media-query stops read from the live CSS

349px

566px

567px

600px

767px

768px

833px

834px

991px

1000px

1199px

1200px

Do's & Don'ts

22 enforceable rules pulled verbatim from the spec

Use Off-White (`#faf9f5`) as the page background — it's intentionally not pure white

Use Near-Black (`#141413`) for text — not pure black, it's warmer and more readable

Use anthropicSans as the primary typeface — it defines the brand personality

Use the extracted shadow patterns for elevation — they are tuned to match the brand palette

Use Off-White (`#faf9f5`) as the primary accent — it's the brand's signature interactive color

Use 8px border-radius on buttons — the standard corner rounding for interactive elements

Maintain nav height at 88px — consistent vertical space for the navigation bar

Make the hero full-viewport (≥70% screen height) — this design uses an immersive hero, not a tall navbar

Build the hero as a split layout with media on the left — text and visual share equal weight

Include exactly 4 CTAs in the hero (primary + secondary) — this design pattern is multi-action, not single-purpose

Each card includes a top image — imagery is part of the card identity, not optional

Use a 3-column grid on desktop — density matters for this content type

Place 3 pricing tiers side-by-side on desktop — direct comparison is the value prop

Use expandable accordion for the FAQ — saves vertical space and lets users self-navigate

Don't

Don't use pure white (`#ffffff`) as a page background — the warm tone is part of the brand identity

Don't use pure black (`#000000`) for text — the near-black adds warmth

Don't substitute with generic sans-serif or serif — the custom font carries the brand

Don't invent new shadow values — use only the extracted shadow levels

Don't introduce additional saturated accent colors — the palette is intentionally controlled

Don't collapse or hide the nav on scroll without an explicit scroll-triggered animation — the design uses fixed nav presence

Don't make the nav sticky — this design lets it scroll away to maximize content focus

Don't put a CTA button in the nav — this design uses links only at the top

Agent guide & export

Paste-ready prompt + the real files behind this page

Build a UI in the claude.com design system. Canvas #faf9f5 · ink #141413 · accent #faf9f5. Type: anthropicSans — respect the size/weight ladder in §3. Radius, spacing, shadow: use only the extracted scales (no magic numbers). Full spec follows — paste the DESIGN.md below into your agent.

Every value above was getComputedStyle-verified.

$ npx prismd add claude

DESIGN.md · narrative spec tokens.json