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Free WCAG contrast checker

Check color contrast instantly.

Test text and background colors for readability, accessibility and WCAG AA / AAA contrast standards.

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AdSense banner placement
Readable?
Contrast ratio 4.50
Status AA
AdSense rectangle placement

What is a contrast checker?

A contrast checker measures the difference between text color and background color. This helps you see whether your design is readable for different users and devices.

WCAG contrast guidelines are commonly used for accessible web design. Normal text usually needs a contrast ratio of at least 4.5:1 for AA compliance.

Use this tool when designing websites, buttons, posters, interfaces, landing pages and brand systems.

Frequently asked questions

What contrast ratio do I need?

For WCAG AA, normal text needs at least 4.5:1. Large text needs at least 3:1. For AAA, normal text needs 7:1.

What does WCAG mean?

WCAG stands for Web Content Accessibility Guidelines. These guidelines help make websites more usable for more people.

Can I use this for brand colors?

Yes. It is especially useful for testing brand colors before using them in web design, social content or interface design.

AdSense bottom ad placement 1
AdSense bottom ad placement 2