Color Contrast Checker

Sample Text Preview

Example Input:

Foreground color: #1a1a1a (very dark gray)

Background color: #ffffff (white)

What happens when you enter these in the fields and click Check Contrast:

  1. The preview box updates:
    • Text color → #1a1a1a
    • Background color → #ffffff
  2. The result section will display:
    • Contrast Ratio: 15.05:1
    • Passes WCAG AA for normal text
    • Passes WCAG AAA for normal text
    • Passes WCAG AA for large text
    • Passes WCAG AAA for large text

This helps you instantly see if your color combination is accessible and easy to read for everyone.

Free Online Color Contrast Checker – WCAG AA / AAA Accessible Colors

Want to be sure your text is readable and accessible to all users? Our Free Color Contrast Checker instantly calculates the contrast ratio between two colors (foreground & background) and tells you whether it meets WCAG 2.1 AA and AAA accessibility standards. No installs, no sign-ups — just paste your color values and check.

Why Use a Color Contrast Checker?

  • Ensure readable text for people with low vision or color blindness
  • Meet accessibility guidelines required by many organizations & laws
  • Improve UX, reduce bounce rates, and build trust with users
  • Quickly test brand color pairs before launch

Key Features of Our Color Contrast Checker

  • Instant contrast ratio calculation (0:1 to 21:1)
  • WCAG 2.1 pass/fail badges for normal & large text (AA / AAA)
  • Live preview block showing real text on your background color
  • Accepts HEX (#RRGGBB), short HEX (#RGB), and optionally RGB/HSLA (if enabled)
  • Copyable accessible color suggestions (optional enhancement)
  • Fast, privacy-friendly — runs in your browser

Common Use Cases

  • Check body text vs background for websites
  • Validate mobile app UI theme colors
  • Compare brand colors in hero banners & buttons
  • Audit marketing images with overlaid text
  • Teach accessibility in classrooms & workshops

Popular Search Keywords

People find this tool by searching for:

  • color contrast checker online
  • WCAG contrast ratio tool
  • accessible color combinations
  • AA vs AAA contrast test
  • check text color readability

How to Use This Tool

  • Enter a background color (HEX or pick with a color picker)
  • Enter a text/foreground color
  • Click “Check Contrast” (or auto-calculate as you type)
  • View the live preview and see AA/AAA pass or fail
  • Copy results or export accessible color suggestions

Why Choose Our Color Contrast Checker?

We built this tool for speed, accuracy, and accessibility education. It runs client-side for privacy, uses WCAG-compliant math, and gives instant visual feedback. Whether you're a developer, designer, or accessibility consultant, it's the fastest way to validate color choices.

Make your designs inclusive. Test a color pair now and improve readability for everyone!