Free WCAG color contrast checker

Free WCAG color contrast checker with 100% local privacy.

Design Tools User Experience Software EngineeringLaunched Sep 17, 2026

What is Free WCAG color contrast checker?

Check text and icon readability instantly using the WCAG 2.1 formula. Features real-time testing for 5 color formats and an automatic matching tool to fix low contrast. 100% serverless—no data or files are ever uploaded.

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