Amumu Webtools

Free Online Color Contrast Checker (WCAG)

Check WCAG contrast

Check contrast for WCAG AA and AAA. Normal text >4.5:1, large >3:1.

Sample text 12px

Sample text 18px

Ratio: 21.00:1AA (normal): PassAA (large): PassAAA (normal): PassAAA (large): Pass

What is Color Contrast Checker (WCAG)?

Color Contrast Checker (WCAG) is a web-based utility that runs entirely in your browser. You can check wcag contrast without installing software or creating an account.

How to Use This Tool?

Paste or type your input in the box above, adjust options if needed, and use the buttons to format, convert, or process. Results appear instantly.

  1. Paste or type your input in the tool area above.
  2. Adjust any options (format, encoding, etc.) if needed.
  3. Use the action buttons to format, convert, or process.
  4. Copy or download the result as needed.

100% Secure & Client-Side

All processing runs 100% in your browser. We do not upload, store, or transmit your data to any server. Your privacy and data security are guaranteed.

Frequently Asked Questions

Color Contrast Checker (WCAG) helps you process and transform data directly in the browser with no server round-trip.