Compare software

Accessible Color MatrixContrast Finder
Free

Free to use in the browser.

 Free

Free to use online and open source for self-hosting.

Web Web, Self-hosted
  • Checks every color pairing in a palette at once
  • Grid view makes passing and failing combinations easy to scan
  • Suggests valid colors close to the original
  • Choose to adjust text or background color
  • Focused only on contrast, with no palette generation
  • Small single-purpose tool with limited documentation
  • Checks one color pair at a time
  • Focused only on contrast, not other accessibility criteria
Web application Web application, Self-hosted
Closed source Open source
License not stated License: AGPL-3.0
Not stated if an account is needed No account needed
Not stated if it works offline Not stated if it works offline

Checked October 2, 2026

Checked September 24, 2026

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