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WCAG 2.1

Color Contrast Checker

Check WCAG 2.1 AA/AAA contrast ratios. Test any color combination for accessibility compliance.

The quick brown fox

jumps over the lazy dog.

Contrast ratio

14.88:1

  • Normal text · AA (4.5:1)
  • Normal text · AAA (7:1)
  • Large text · AA (3:1)
  • Large text · AAA (4.5:1)

How to use

  1. 1

    Pick a foreground and background color.

  2. 2

    See the contrast ratio update live.

  3. 3

    Aim for AA (4.5:1) or AAA (7:1).

Who is this for

  • Founders shipping SaaS, dev tools, and B2B products.
  • SEO managers auditing client sites quickly.
  • Agencies producing weekly visibility reports.
  • Indie hackers fixing AI visibility before launch.

Common questions

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Get the full AI visibility audit

This free tool checks one signal. The full audit scores 25+ signals, monitors ChatGPT and Perplexity for your brand, and ships fix files.

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