Select Text Color
Click the first color picker to choose your text color, or enter a hex code directly.
Choose Background Color
Use the second color picker to select your background color for the contrast test.
Review Contrast Results
Check the calculated contrast ratio and see AA/AAA ratings for normal and large text.
Preview Your Design
View the live preview to see how your color combination looks with actual text content.
Real-Time Contrast Testing
Instantly calculate contrast ratios as you select different text and background color combinations.
WCAG Compliance Ratings
Get AA and AAA ratings for both normal and large text according to Web Content Accessibility Guidelines.
Live Preview Panel
See exactly how your color combinations will look with sample text in both normal and large sizes.
Visual Score Indicator
View your contrast performance with an intuitive circular chart showing scores from 0-100.
Interactive Color Pickers
Choose colors easily with built-in color picker tools for both text and background colors.
Accessibility Tips
Get practical suggestions for improving contrast and meeting accessibility standards.
A color contrast checker is a tool that measures the difference in luminance between text and background colors. It calculates contrast ratios according to WCAG (Web Content Accessibility Guidelines) standards to ensure content is readable for users with visual impairments, including color blindness and low vision.
WCAG Compliance
Ensure your designs meet international accessibility standards with accurate AA and AAA ratings.
Real-Time Feedback
See instant results as you adjust colors, making it easy to find compliant combinations.
Visual Score System
Understand contrast performance at a glance with our intuitive 0-100 scoring system.
No Installation Required
Test color combinations instantly in your browser without downloading any software.
For normal text, aim for at least 4.5:1 for AA compliance or 7:1 for AAA. Large text (18pt or 14pt bold) needs 3:1 for AA or 4.5:1 for AAA compliance.
AA is the standard level of accessibility compliance required by most regulations. AAA is the highest level, providing enhanced accessibility for users with more severe visual impairments.
Contrast ratio is calculated using the relative luminance of colors as defined by WCAG guidelines. It ranges from 1:1 (no contrast) to 21:1 (maximum contrast).
Large text is defined as 18 point (24px) or larger, or 14 point (18.66px) or larger if bold. Large text has more lenient contrast requirements.
Good color contrast ensures content is readable for everyone, including users with visual impairments, color blindness, or those viewing content in bright sunlight or on poor displays.
The tool accepts hex color codes. You can convert from other formats (RGB, HSL, etc.) to hex using online converters or design tools.