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WebAIM Contrast CheckerAccessible Colors
Free

Free to use.

 Free

Used directly in the browser; the site mentions no pricing.

Web Web
  • Separate results for normal text, large text and UI components
  • Alpha and lightness controls for adjusting colors
  • Checks against both WCAG AA and AAA levels
  • Suggests the nearest passing colors instead of only failing a pair
  • Checks one color pair at a time
  • Does not scan a live page
  • Based on WCAG 2.0 contrast rules
  • Limited to text and background color pairs
Web application Web application
Closed source Closed source
License not stated License not stated
No account needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.