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Color Review vs WebAIM Contrast Checker: catalog facts
Color Review	WebAIM Contrast Checker
Free Free to use in the browser with no paid tier shown.	Free Free to use.
Web	Web
Edit colors in hex, RGB, HSL, HSV or CMYK Live preview of body text and headlines	Separate results for normal text, large text and UI components Alpha and lightness controls for adjusting colors
Checks one color pair at a time Requires a browser and connection	Checks one color pair at a time Does not scan a live page
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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