Simulate different types of color blindness to test accessibility. Professional accessibility testing tool.
Our color blindness simulator helps you test your designs to make sure they work for everyone. Many people see colors differently, and it's important to create designs that are accessible to all users. This tool lets you see how your colors look to people with different types of color vision, so you can make sure your designs are clear and easy to use for everyone, not just those with perfect color vision.
Simulate various types of color blindness including protanopia, deuteranopia, tritanopia, and monochromacy.
Control the severity of color blindness simulation from mild to severe for comprehensive testing.
Test your designs for color accessibility compliance and ensure inclusive user experiences.
Export your simulation results and accessibility reports for documentation and team sharing.
Red-blindness. Difficulty distinguishing red and green colors. Affects about 1% of males.
Red appears dark/brown
Green-blindness. Most common type. Difficulty distinguishing red and green colors.
Green appears brown
Blue-blindness. Rare condition. Difficulty distinguishing blue and yellow colors.
Blue appears green
Total color blindness. See only in shades of gray. Very rare condition.
No color perception
Ensure sufficient contrast between text and background colors for readability across all vision types.
Use additional visual cues like icons, patterns, or text labels to convey information beyond color.
Regularly test your designs with color blindness simulators to ensure accessibility compliance.
Adhere to WCAG 2.1 guidelines for color contrast ratios and accessibility standards.
Color blindness (color vision deficiency) affects how people perceive colors. Designers must ensure information isn't conveyed solely through color - use contrast, patterns, icons, or text labels as well.
Approximately 8% of men and 0.5% of women have some form of color vision deficiency. This means millions of users may struggle with color-dependent designs, making accessibility crucial.
Deuteranopia (green-blind) and protanopia (red-blind) are most common, affecting red-green color perception. Tritanopia (blue-blind) is rarer. Most colorblind users can see some colors, just differently.
Use high contrast, don't rely solely on color to convey information, add text labels or icons, test with simulators, and ensure color combinations are distinguishable even when colors appear similar.
Most colorblind users can see colors, but perceive them differently. They may confuse certain color pairs (red/green, blue/purple). Design with sufficient contrast and multiple visual cues beyond just color.
Avoid red-green combinations, low contrast pairs, and relying solely on color for important information. Always provide alternative visual cues like icons, patterns, or text labels.