No. It approximates average perception with a mathematical model; real people vary in severity, adaptation and lighting context.
Color Blindness Simulator
Compare palettes under protanopia, deuteranopia, tritanopia and achromatopsia before shipping.
Visual accessibility starts before contrast
Color blindness simulation helps detect interfaces that rely too heavily on hue to communicate state, risk or category. Matrix-based simulation is a useful design approximation, not a visual diagnosis. Use the result to tune palettes and add labels, SVG icons, patterns and sufficient contrast between important states.
Compare meaning, not only aesthetics
- Paste HEX colors from your interface, chart or visual identity.
- Switch between deficiency types and notice which colors become too close.
- Reinforce critical states with text, border, pattern or contrast, not only color.
Sources and references for this tool
These references help contextualize formulas, standards, APIs and limitations used on this page. They do not replace professional validation when a result has legal, financial, medical or operational impact.