Color Contrast Checker
Check WCAG AA/AAA color contrast ratios for accessible design.
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🔒 Processed locally — your data never leaves your device.
How to Use Color Contrast Checker
- 1Open the Color Contrast Checker tool on this page.
- 2Enter your input — paste text, upload a file, or fill in the required fields.
- 3Get instant results processed entirely in your browser.
- 4Copy the output or download your file with one click.
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Frequently Asked Questions
Is Color Contrast Checker free?
Yes, completely free. No registration required.
Do my files get uploaded?
No. Color Contrast Checker runs entirely in your browser. Nothing is sent to a server.
Is there a file size limit?
No artificial limits. Processing is limited only by your device's available memory.
Does Color Contrast Checker work offline?
Yes, once the page is loaded, the tool works without an internet connection.