Free Contrast Checker for Web Design
Check color contrast ratios for WCAG compliance in web design. Ensure your website is accessible and readable for all users. Free online tool.
Color contrast is one of the most critical aspects of web accessibility. Poor contrast makes text unreadable for millions of users with low vision or color blindness. WCAG 2.1 requires a minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text.
Tips for Web Design
Test both your primary text color and secondary/muted text against all background colors used on your site
Check contrast in dark mode too — many sites pass in light mode but fail in dark mode
Don't forget to test link colors, placeholder text, and disabled states — these are commonly missed
Aim for AAA compliance (7:1 ratio) when possible, not just the minimum AA standard
Try This Example
“Check if my heading color #2D3748 has enough contrast against my background #F7FAFC for WCAG AA compliance”