Color converters

Accessibility Contrast Checker

Calculate WCAG contrast and text-size pass levels for two colors. Nothing you enter leaves your browser.

Enter foreground and background colors

Result

Your result will appear here.

Simple by design

Get the answer, without the clutter.

FormatCalc is built for quick work. This accessibility contrast checker runs entirely on your device, so private text and data stay private.

01

Enter or paste your information.

02

Transform it with one click.

03

Copy, use, or download your result.

Common questions

Using the Accessibility Contrast Checker

Is the Accessibility Contrast Checker free to use?

Yes. FormatCalc's Accessibility Contrast Checker is free to use with no account required.

Is my data private when I use the Accessibility Contrast Checker?

Yes. This tool processes your input locally in your browser. FormatCalc does not upload or store what you enter.

How do I use the Accessibility Contrast Checker?

Paste or type your input, select any available options, and choose Check contrast. You can then copy the result.