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HTML/CSS Color Picker & Contrast Checker
Pick colors and verify WCAG contrast ratios.
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Paste this into any page — the live tool appears with a credit link back here.
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About HTML/CSS Color Picker & Contrast Checker
Choose two colors, see hex/RGB values, and get an instant WCAG AA/AAA contrast grade.
📐 Methodology & Reference Accuracy:
Calculations, formulas, and conversions execute locally in your web browser. Output models are benchmarked against official reference standards and updated for 2026.
🔒 This tool runs entirely in your browser. Nothing is uploaded or stored.
Background reading: Color Picker Contrast on Wikipedia. More: all developer tools.
Frequently Asked Questions about HTML/CSS Color Picker & Contrast Checker
How do I use the HTML/CSS Color Picker & Contrast Checker?
Open the HTML/CSS Color Picker & Contrast Checker and use the controls in the workspace below: pick colors and verify wcag contrast ratios. Results appear instantly in your browser, with nothing to install, sign up for, or pay for.
Is the HTML/CSS Color Picker & Contrast Checker free?
Yes. The HTML/CSS Color Picker & Contrast Checker is completely free, like every tool in the PrimeFreeTools library. There are no accounts, subscriptions, or usage limits.
Does the HTML/CSS Color Picker & Contrast Checker store or share my data?
No. The HTML/CSS Color Picker & Contrast Checker runs with JavaScript in your browser, so what you enter never leaves your device and nothing is stored on a server.
What can I use the HTML/CSS Color Picker & Contrast Checker for?
Choose two colors, see hex/RGB values, and get an instant WCAG AA/AAA contrast grade. You will find it grouped under Developer Tools together with 78 other free tools on the PrimeFreeTools homepage.
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