Free simulator for Protan, Deutan, Tritan. Instant before/after. Used by 500+ design teams.
Upload a screenshot of your site to see how colorblind users see it
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Works instantly in your browser • No signup needed • Pro unlocks website URLs + PDF reports
Meets AA/AAA contrast standards for 8% of users with color blindness.
Perfect for Figma, Sketch, Adobe XD prototypes and live sites.
Save/share reports. Bulk testing for agencies.
300M people worldwide have color vision deficiency. Make yours accessible.