Color Contrast Checker

This free online color contrast checker calculates the WCAG contrast ratio between two colors and checks whether it passes AA/AAA accessibility standards. It runs instantly in your browser with no sign-up required.

Enter your value above and the result updates instantly. This tool is commonly used for making sure text is readable and websites meet accessibility guidelines.

Frequently Asked Questions

Is the color contrast checker free to use?

Yes, the color contrast checker on ConverterHub is completely free, with no sign-up or limits.

Does this tool store or send my data anywhere?

No. It calculates the WCAG contrast ratio between two colors and checks whether it passes AA/AAA accessibility standards entirely in your browser — nothing is uploaded to a server.