Contrast Checker
A free online tool to check color contrast ratios for web accessibility, ensuring compliance with WCAG standards.
Score
70
User Rating
3.0
Free/Trial Support
Supported
Starting Price
--
Last Updated
Aug 04, 2026
Overview
What is Contrast Checker?
The Contrast Checker is a web-based tool that allows users to input foreground and background colors to calculate contrast ratios, helping designers and developers meet WCAG accessibility guidelines for text and graphical elements.
What is Contrast Checker used for?
Top Features
- Color contrast ratio calculation
- WCAG compliance checking
- Color picker with eyedropper tool
- Alpha value adjustment
- Lightness slider
- API and bookmarklet integration
How to use Contrast Checker?
Enter hex color values or use the color picker to select foreground and background colors. Adjust alpha and lightness as needed. The tool displays contrast ratios and indicates pass/fail status for WCAG AA and AAA levels for normal text, large text, and graphical objects.
Alternative Tools
No alternative tools found
Pros & Cons
Pros
- Free to use
- Easy to use interface
- Supports WCAG 2.0 and 2.1 standards
- Includes API for automation
- Bookmarklet for on-page testing
Cons
- Limited to web platform
- No advanced customization options
Use Cases
- Web design accessibility testing
- Developer tool for compliance checks
- Educational resource for learning about color contrast
Contrast Checker Pricing
Free Plan
No detailed pricing information available
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