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Advanced color accessibility tools for designers and developers. Check contrast ratios, analyze websites, and build inclusive experiences.
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Level AA is the standard level of compliance that most websites should aim for:
Level AAA is the highest level of compliance, providing enhanced accessibility:
Sufficient contrast between text and its background is essential for people with low vision, color blindness, or who are viewing screens in bright environments. Good contrast benefits all users by making content more readable and reducing eye strain.
WCAG guidelines have different contrast requirements based on text size. Here's how text size relates to contrast requirements:
Less than 18pt (24px) or
Less than 14pt (18.6px) if bold
At least 18pt (24px) or
At least 14pt (18.6px) if bold
When designing, remember that the actual perceived size of text depends on the specific font family used. Some fonts appear smaller at the same pixel size compared to others.
Color contrast is essential for making content readable by users with visual impairments. WCAG 2.1 requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Key points: • Test all color combinations in your design • Consider both normal and large text requirements • Don't forget about hover and focus states • Test in different lighting conditions
Using semantic HTML elements helps screen readers and other assistive technologies understand your content structure. Best practices: • Use proper heading hierarchy (h1-h6) • Choose semantic elements over divs when possible • Include ARIA labels when needed • Ensure form elements have proper labels
Many users rely on keyboard navigation. Ensuring your site works without a mouse is crucial. Key requirements: • All interactive elements must be focusable • Focus order should be logical • Provide visible focus indicators • Implement skip links for main content