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Frequently Asked Questions

How accurate is the contrast checker?

Our contrast checker uses the algorithms specified in the WCAG 2.1 guidelines to calculate contrast ratios, ensuring accurate results.

Is this tool free to use?

Yes! The Color Contrast Checker is completely free to use for both personal and commercial projects.

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Global Reach

Color Contrast Checker is used by designers and developers in over 190 countries worldwide

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Serving users worldwide since 2025

Supporting 190+ countries and 7+ languages