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Color Accessibility Tester

Test color combinations for accessibility and contrast compliance. Enter text and background colors to instantly see WCAG AA/AAA results and get suggestions for accessible alternatives.

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Color Accessibility Tester

Color Selection

HEX
HEX

Text Preview

Regular text (16px)

Bold text (16px)

Small text (14px)

Small bold text (14px)

Large text (20px)

Accessibility Results

Contrast Ratio
21.00
AAA
WCAG Compliance
Normal Text (AA): Pass
Normal Text (AAA): Pass
Large Text (AA): Pass
Large Text (AAA): Pass
Color Information
Foreground: Black (#000000)
Background: White (#FFFFFF)

Suggestions

This color combination has excellent contrast and meets all WCAG standards.

Color Blindness Simulator

Normal
Aa
Protanopia
Aa
Deuteranopia
Aa
Tritanopia
Aa

Quick Tests

WCAG Standards

  • AA (Minimum):
    • 4.5:1 for normal text (under 18pt or 14pt bold)
    • 3:1 for large text (18pt+ or 14pt+ bold)
  • AAA (Enhanced):
    • 7:1 for normal text
    • 4.5:1 for large text
These standards apply to body text. Logos and decorative elements have no contrast requirements.

Color Blindness Info

Approximately 1 in 12 men (8%) and 1 in 200 women have some form of color vision deficiency:

  • Protanopia: Red-blind (1% of males)
  • Deuteranopia: Green-blind (1% of males)
  • Tritanopia: Blue-blind (0.003% of population)
  • Achromatopsia: Total color blindness (0.0003% of population)
Never rely on color alone to convey information. Use text labels or patterns as well.

Key Features

Real-Time Contrast Testing

Enter any text and background color to get instant contrast results.

WCAG AA & AAA Compliance

Automatically checks whether your color pair meets accessibility standards for normal and large text.

Hex and RGB Support

Supports both HEX and RGB color input formats.

Accessible Alternatives

Suggests nearby color options that improve contrast while preserving visual style.

Simulate Color Blindness

Preview how your color combinations appear to users with different types of color blindness.

Frequently Asked Questions

WCAG (Web Content Accessibility Guidelines) defines minimum contrast ratios between text and background to ensure readability for users with visual impairments.

AA is the minimum level of acceptable contrast for standard accessibility. AAA is a higher standard used in more rigorous accessibility environments.

Yes, the tool supports any color combination and evaluates both text-on-light and text-on-dark scenarios.

Yes! Large text has slightly different contrast requirements, and the tool accounts for that.

Yes! The Color Accessibility Tester is completely free and works instantly in your browser.

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Tool Details
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