How accurate is the color contrast checker?

This tool uses standard algorithms and formulas to ensure accuracy for typical use cases. For critical applications, we recommend verifying results with official methods or professionals.

Is this tool free to use?

Yes! This tool is completely free with no hidden costs, subscriptions, or limitations. Use it as often as you need.

Do I need to create an account?

No account needed. The tool works entirely in your browser without requiring signup or personal information.

Does this work on mobile devices?

Yes, this tool is fully responsive and works on smartphones, tablets, and all desktop browsers.

Absolutely. All processing happens locally in your browser. Your data never leaves your device and is not stored on any server.

🎨 Color Contrast Checker

Check WCAG color contrast compliance for accessibility

Foreground (Text)

Background

Contrast Ratio: 21:1

AA Normal Text: ✓ Pass

AA Large Text: ✓ Pass

AAA Normal Text: ✓ Pass

AAA Large Text: ✓ Pass

Sample text for preview