What are WCAG contrast requirements?

WCAG AA requires 4.5:1 for normal text and 3:1 for large text. WCAG AAA requires 7:1 for normal text and 4.5:1 for large text. Large text is defined as 18pt (24px) or larger, or 14pt (18.67px) bold or larger.

Why is color contrast important?

Good color contrast ensures text is readable for people with visual impairments, color blindness, or those using low-quality displays. It also improves readability in bright sunlight or low-light conditions.

What if my colors don't pass the contrast check?

The tool provides specific suggestions for improving contrast, such as darkening/lightening colors or changing text size. You can also use the color picker to find better combinations.

Does this tool check for color blindness accessibility?

While this tool focuses on contrast ratios, good contrast generally helps with color blindness. For comprehensive color blindness testing, consider using specialized color blindness simulation tools.

Can I check contrast for images or graphics?

This tool is designed for text on solid color backgrounds. For images and graphics, you may need different accessibility evaluation tools that consider context and anti-aliasing.

Are there different standards for different countries?

WCAG guidelines are internationally recognized. However, some countries have their own accessibility standards that may reference or extend WCAG requirements.

Color Contrast Checker

Ensure inclusive design with precision color contrast analysis meeting WCAG accessibility guidelines. Vital for web developers, UI/UX designers, and accessibility advocates seeking compliant color combinations with intelligent improvement recommendations.

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accessibility

wcag

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Input

Enter text and background colors to check contrast ratio.

Text Color (Foreground)

Background Color

How it works: Calculates the contrast ratio between text and background colors using WCAG luminance formulas. Ratios of 4.5:1+ pass AA, 7:1+ pass AAA standards.

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