nextools

Contrast Checker

Check the contrast ratio between two colors to ensure WCAG 2.1 accessibility compliance.

Select Colors

ademic

Contrast Result

Sample Text
Contrast Ratio: N/A:1
  • WCAG AA (Normal Text, ≥4.5:1): Fail
  • WCAG AA (Large Text, ≥3:1): Fail
  • WCAG AAA (Normal Text, ≥7:1): Fail
  • WCAG AAA (Large Text, ≥4.5:1): Fail

Contrast Checker Tips & Best Practices

How It Works

  • Select two colors to calculate their contrast ratio based on WCAG 2.1 standards.
  • The tool evaluates compliance for normal text (≥4.5:1 for AA, ≥7:1 for AAA) and large text (≥3:1 for AA, ≥4.5:1 for AAA).
  • Preview the color combination with sample text to assess readability.

Common Use Cases

  • Ensuring readable text on website backgrounds.
  • Designing accessible user interfaces for apps and websites.
  • Verifying color combinations meet accessibility standards.

Best Practices

  • Aim for high contrast ratios to improve readability for all users.
  • Ensure compliance with at least WCAG AA for normal and large text.
  • Test colors with your actual content, font sizes, and weights.