🔥 FireTools

Color Contrast Checker

Check WCAG color contrast ratios for accessibility compliance in your browser. Free, online, no upload, fully private.

Local processing

Sample text preview

The quick brown fox jumps over the lazy dog.

Contrast ratio

21.00:1

✓ AA Normal (4.5:1)
✓ AA Large (3:1)
✓ AAA Normal (7:1)
✓ AAA Large (4.5:1)

How to Use

Enter your input above. The result updates automatically. Use the copy button to copy the result.

Privacy

All processing happens in your browser. Your data is never uploaded to any server.

FAQ

Is my data uploaded?

No. Contrast calculation happens locally in your browser. Your color values never leave your device.

What WCAG levels are checked?

The tool checks against WCAG 2.1 AA (4.5:1 for normal text, 3:1 for large text) and AAA (7:1 for normal text) thresholds.

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