Design
Color Contrast Checker
Check WCAG contrast between two colors.
100% free · runs in your browser · nothing is uploaded.
Why use this tool
- 100% free, forever
- No sign-up or login
- Runs entirely in your browser
- Your files never leave your device
- Unlimited use, no watermarks
- Works on desktop and mobile
How to use Color Contrast Checker
- 1
Open Color Contrast Checker — it loads instantly in your browser.
- 2
Enter or upload your input and adjust any available options.
- 3
Copy or download your result. Nothing is uploaded.
Compare a text and background color to get the contrast ratio and whether it passes WCAG AA/AAA for normal and large text.
Frequently asked questions
Yes — Color Contrast Checker is completely free, with no sign-up, no usage limits, and no watermarks.