Colour contrast checker

WCAG 2.x contrast ratio and AA/AAA results.

Foreground*

Background*

Result

Run the tool to see results here.

About Colour contrast checker

Colour contrast checker is a free online calculator tool. WCAG 2.x contrast ratio and AA/AAA results.

Enter your input, adjust the options (foreground and background) and run it. The result appears right next to the form, is never stored, and you can copy or save it in one click. No account is needed.

How to use Colour contrast checker

Type or paste your input into the form.
Choose the options you need: foreground and background.
Press Run, or use Ctrl/⌘ + Enter.
Copy or save the result from the panel on the right.

Colour contrast checker FAQ

What does Colour contrast checker do?

WCAG 2.x contrast ratio and AA/AAA results.

Is Colour contrast checker free to use?

Yes. Colour contrast checker is free, with no sign-up or account required.

Is my data safe?

Results are never stored. See our privacy policy for details.

What options does Colour contrast checker have?

You can set: Foreground and Background.

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