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WCAG Color Contrast Checker

Calculate contrast ratio between text and background colors.

How to use WCAG Color Contrast Checker step by step

1. Paste your input into the WCAG Color Contrast Checker editor.
2. Configure the options for encoding, formatting or validation.
3. Run the tool and read the output or any errors it reports.
4. Copy the result back into your editor.

Why use this developer tools tool

• WCAG Color Contrast Checker runs entirely inside your browser, so your file is never uploaded and nothing is logged.
• WCAG Color Contrast Checker is one of 570 tools in Developer Tools, next to JSON Formatter & Validator when the related job needs doing too.

Frequently asked questions

Is WCAG Color Contrast Checker free to use?

Yes. WCAG Color Contrast Checker has no usage limit, no sign-up and no paywall.

Can I use WCAG Color Contrast Checker on a phone?

Yes. KPM Tools is built to work on a phone as well as a desktop, so you can run WCAG Color Contrast Checker without installing anything.

What is WCAG Color Contrast Checker used for?

WCAG Color Contrast Checker covers wcag color contrast checker, developer and online tool.

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