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WCAG Contrast Auditor
ColorCheck foreground and background color contrast for WCAG AA and AAA compliance.
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Color Contrast Auditor
Sample Text (WCAG 2.1 Contrast Check)
Smaller text for body copy
21.00:1
Contrast Ratio
✓
AA Normal
✓
AAA Normal
✓
AA Large
Batch Audit
Enter colors (one per line) to check against background:
Quick answers for WCAG Contrast Auditor
What does the WCAG Contrast Auditor do?
Check foreground and background color contrast for WCAG AA and AAA compliance. The WCAG Contrast Auditor is one of 900+ free developer tools on Toolblip - all open to use without a signup.
How do I use the WCAG Contrast Auditor?
Open the WCAG Contrast Auditor on this page, paste or upload your input, and the result updates as you type. Use the copy button to grab the output, or adjust options to tune the result. Nothing you enter leaves your browser.
Is the WCAG Contrast Auditor free to use?
Yes. The WCAG Contrast Auditor is a free online tool on Toolblip - no signup, no account, no hidden usage limits. It runs in your browser and works on desktop and mobile.
Is the WCAG Contrast Auditor safe and private?
Yes. The WCAG Contrast Auditor processes your data entirely client-side, so nothing you paste is uploaded or stored on any server. It's safe to use with internal snippets, private keys for debugging, or any other sensitive content you'd rather not send to a remote service.
What color formats does the WCAG Contrast Auditor support?
The WCAG Contrast Auditor works with the formats web developers reach for every day - HEX, RGB / RGBA, and HSL. You can copy any value with one click for use in CSS, design tools, or code.
Can I use the WCAG Contrast Auditor offline?
Once the page has loaded, the WCAG Contrast Auditor continues to work without an internet connection. Bookmark this page and return to it anytime - all logic runs locally.