Free Color Contrast Checker
Check color contrast ratios against WCAG 2.1 AA and AAA accessibility standards with live preview.
Preview Text (Large)
This is how your regular body text will look with these color choices. Make sure it's readable.
Small text needs higher contrast to remain accessible.
Contrast Ratio
How to Use Color Contrast Checker
- 1
Enter or pick a foreground (text) color.
- 2
Enter or pick a background color.
- 3
The tool calculates the contrast ratio instantly.
- 4
Check WCAG AA and AAA compliance for normal and large text.
Frequently Asked Questions
What is WCAG?▾
WCAG (Web Content Accessibility Guidelines) defines standards for making web content accessible to people with disabilities.
What contrast ratio is needed for AA?▾
4.5:1 for normal text and 3:1 for large text (18px+ or 14px+ bold).
What about AAA compliance?▾
7:1 for normal text and 4.5:1 for large text.
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