Color Contrast Checker Online

Check text and background color contrast instantly. Get WCAG AA, AAA, large text, UI component results, smart color suggestions, live website preview and developer-ready CSS output.

WCAG AA / AAA Text + Background Check Smart Better Color UI Preview CSS Output

Choose Colors

Live Preview

Readable Design Preview

Your website text should be easy to read.

Accessibility Results

Contrast Ratio --
Normal Text AA
Normal Text AAA
Large Text AA
Large Text AAA

Smart Accessible Text Suggestions

Real Website UI Preview

Accessible Website Navbar

Accessible Card Preview

Use readable colors for better UX, SEO trust and accessibility.

Accessible Button

Developer Output

How to Use Color Contrast Checker
Choose your text color and background color. The tool instantly calculates the contrast ratio and shows WCAG AA and AAA results for normal text and large text. You can also swap colors, generate accessible pairs and copy CSS output.
Example
White text on a dark background usually passes accessibility checks. But light grey text on a white background may fail. This tool helps you quickly test readability before using colors on websites, buttons, banners or landing pages.
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FAQ


What is a color contrast checker?
A color contrast checker tests the readability between text and background colors using contrast ratio.


What contrast ratio passes WCAG AA?
Normal text needs 4.5:1 for AA. Large text needs 3:1 for AA.


What contrast ratio passes WCAG AAA?
Normal text needs 7:1 for AAA. Large text needs 4.5:1 for AAA.
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