Color · Free online tool
Contrast Checker
Check foreground and background contrast with real ratio calculations and WCAG text guidance.
✓ Free to use↓ Export ready
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Different technologies support different asset types. Generated snippets are editable starting points.
ABOUT THIS TOOL
What can you create with Contrast Checker?
Make navigation, buttons, headings and body copy easier to read.
How to use Contrast Checker
Enter text and background colors, examine the computed ratio, and export the selected pairing.
Design tips and limitations
AA text requirements are generally 4.5:1 for normal text and 3:1 for large text; exceptions apply.
Built for a practical design workflow
ColorPremise keeps the creative controls next to the preview and export options. Try a variation, compare the result visually, and then bring the output into your own website, app, or design project. You can always return to the free design tool directory to continue refining related details.