Color Contrast Checker

Check color contrast ratios for WCAG accessibility compliance

Preview
Contrast ratio6.70:1
AA
Pass
AAA
Fail
AA Large textPass
color: #ffffff;
background-color: #1d4ed8;

What is a Color Contrast Checker?

A color contrast checker is a free online tool that lets you check color contrast ratios for WCAG accessibility compliance.

All processing happens in your browser — your data is never sent to a server.

How to use

  • Open the tool in your browser
  • Follow the instructions on the screen
  • Get your result and download it for use

Key features

  • Completely free to use
  • No registration or login required
  • Data is processed locally to protect your privacy
  • Supports multiple formats and options

Frequently Asked Questions

What is color contrast?+
The difference in luminance between two colors.
How do I check contrast?+
Enter foreground and background colors and the tool calculates the contrast ratio.
What is the WCAG standard?+
The Web Content Accessibility Guidelines, which define contrast requirements.
Is the tool free?+
Completely free.
Can it suggest alternative colors?+
Yes, it suggests accessible alternatives when the contrast is insufficient.

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