Anthropic brand system audit
Anthropic runs a rounded geometry on a warm paper canvas, set in Anthropic Sans. 7 of 9 contrast pairings pass WCAG 2.1 AA and the homepage scores 97/100 for technical SEO.
3 dimensions
- Brand consistency
- 100
- WCAG 2.1 contrast
- 78
- SEO readiness
- 97
01Brand palette
consistency 100/10002Typography
Body copy set in the brand’s text face, at reading size and comfortable measure.
- Headings
- Anthropic Sans
- previewed with Inter
- Body
- Anthropic Serif
- previewed with Source Serif 4
- Mono / data
- JetBrains Mono
- Google Fonts
03UI vibe & geometry
- Radius style
- Rounded · 8-14 px
- Controls
- 8px
- Cards
- 16px
- Surface
- Warm paper · #FAF9F5 / #FFFFFF / #E8E6DC
04WCAG 2.1 contrast
7/9 AA · 4/9 AAA| Pairing | Colors | Ratio | AA | AAA |
|---|---|---|---|---|
| AaBody text on surface | #141413 / #FAF9F5 | 17.50:1 | Pass | Pass |
| AaSecondary text on surface | #5E5D59 / #FAF9F5 | 6.26:1 | Pass | Fail |
| AaPrimary as link/text on surface | #D97757 / #FAF9F5 | 2.96:1 | Fail | Fail |
| AaButton label on primary | #111113 / #D97757 | 6.04:1 | Pass | Fail |
| AaAccent on surface | #6A9BCC / #FAF9F5 | 2.78:1 | Fail | Fail |
| AaWhite on secondary | #FFFFFF / #141413 | 18.43:1 | Pass | Pass |
| AaBody text on white | #141413 / #FFFFFF | 18.43:1 | Pass | Pass |
| AaDark mode: text on canvas | #F5F5F7 / #110E0F | 17.64:1 | Pass | Pass |
| AaDark mode: primary on canvas | #D97757 / #110E0F | 6.15:1 | Pass | Fail |
05SEO readiness
13 of 14 checks pass- passTitle tag16 chars: “Home \ Anthropic”
- passMeta description121 chars
- passSingle H1 heading1 H1 element(s)
- passCanonical URLhttps://www.anthropic.com/
- passHTML lang attributelang="en"
- passMobile viewportwidth=device-width, initial-scale=1
- passOpen Graph tags3/3 of og:title, og:description, og:image
- passTwitter / X cardsummary_large_image
- warnStructured data (JSON-LD)No JSON-LD found
- passHTTPSServed over HTTPS
- passIndexable (robots meta)No robots restrictions
- passXML sitemap589 URLs · https://www.anthropic.com/sitemap.xml
- passFavicon / touch iconIcon link present
- passImage alt text100% of 5 images
anthropic.com brand audit FAQ
What are Anthropic's brand colors?
Anthropic uses #D97757 as its primary color, #141413 as secondary and #6A9BCC as accent, on a #FAF9F5 surface with #141413 text (snapshot from 10 Nov 2026).
Which fonts does anthropic.com use?
Headings are set in Anthropic Sans (free stand-in: Inter) and body text in Anthropic Serif (free stand-in: Source Serif 4). Proprietary faces are paired with the closest free Google Fonts family for documents and previews.
Does anthropic.com pass WCAG contrast checks?
7 of 9 key color pairings pass WCAG 2.1 AA and 4 pass AAA. The full PDF report suggests a passing replacement color for every pairing that fails.
What is anthropic.com's technical SEO score?
The homepage scores 97/100 across 14 technical SEO checks, with 13 passing: title, meta description, H1, canonical, Open Graph, structured data, sitemap, HTTPS and image alt text among them.
How was this Anthropic audit made?
SuiteAnvil StyleExtract read the public homepage of anthropic.com, its CSS, logo, metadata and sitemap. Run the same audit on any URL for free and export the PDF report or Tailwind v4 tokens.
Take this audit further.
The full report adds prioritized findings, the tonal scale, dark-mode tokens and a developer appendix with Tailwind v4, CSS variables, .cursorrules and DESIGN.md.
Embed on your site (free)Link the Anthropic press kit or show the live brand score badge.
A plain text link to the hosted press & brand kit, e.g. in your site footer or press page.
<a href="https://suiteanvil.com/kit/anthropic.com">Press & Brand Kit</a>
The badge links to the audit and updates after each rescan. Score: mean of brand consistency and the share of WCAG 2.1 AA color pairings.
<a href="https://suiteanvil.com/audit/anthropic.com"><img src="https://suiteanvil.com/api/badge/anthropic.com.svg" alt="Brand and WCAG score for anthropic.com by SuiteAnvil" height="20"></a>[](https://suiteanvil.com/audit/anthropic.com)Snapshot of anthropic.com’s public website from 10 Nov 2026, produced by SuiteAnvil StyleExtract. Values change as the site evolves. Anthropic and its marks belong to their owner; SuiteAnvil is not affiliated with or endorsed by Anthropic.
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