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Free browser utility

Check whether your colors are easy to read.

Test a text and background color combination before you publish a page, email, presentation, or brand asset. Everything runs in your browser—your colors are not sent to our server.

Step 1

Choose your colors

Enter a HEX value or use the color picker. The preview updates as you work.

Good to know

Contrast is only one part of accessible design. Do not use color alone to communicate meaning, and check your design at its actual text size.

A quick guide

What does the ratio mean?

A higher ratio means the text is easier to distinguish from its background. This checker uses the common WCAG contrast thresholds as a practical guide: 4.5:1 for normal text, 3:1 for large text, and stronger thresholds for AAA results.