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Color Contrast Checker
Compare two opaque HEX colors against WCAG text contrast ratios locally.
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Compare two opaque HEX colors against WCAG text contrast ratios locally.
Compare two opaque HEX colors against WCAG text contrast ratios locally.
For developers and technical teams.
Enter text and background as opaque six-digit #RRGGBB colors, then Process. Compare the unrounded sRGB ratio with AA normal 4.5, AA large 3, AAA normal 7 and AAA large 4.5. A rounded display can appear to meet a threshold while the exact result does not. Large-text classification and actual page context require human review. Copy or download the text report; this pair-only calculator does not certify a website.
Yes. It is free and does not require an account.
No. This tool processes content locally in your browser, including selected image files. Only the tool used, language and date are recorded.