Web Color Contrast Calculator — How It Works

Check the WCAG contrast ratio between two colors for your Web designs. Try the Web Color Contrast Calculator in your browser — instant results, no sign-up.

How to use

Enter your values in the fields shown. Results update live as you type.

FAQ

Is this free?

Yes — runs entirely in your browser, no sign-up required.

Is my data saved or sent anywhere?

No. All calculations happen locally in your browser — nothing is uploaded.

Are the results exact?

These are estimates for planning purposes. Always verify final dimensions, colors, and export settings against your target platform’s official specs.

Related

• Web Color Contrast Calculator
• Design, Image & Media