Compare software

WebAIM Contrast CheckerAccessible Brand Colors
Free

Free to use.

 Free

Free to use in the browser.

Web Web
  • Separate results for normal text, large text and UI components
  • Alpha and lightness controls for adjusting colors
  • Tests all combinations of a palette at once
  • Designed around brand palettes
  • Checks one color pair at a time
  • Does not scan a live page
  • Checks contrast only, with no palette editing
  • Not open source
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 October 2, 2026

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