Simulation uses standard color-vision-deficiency matrices applied per pixel. It is an approximation, not a medical diagnosis.
Picked color simulation
#e74c3c
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Simulated
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Simulated
Frequently asked questions
What do the four vision types mean?
Protanopia is red-blindness, deuteranopia is green-blindness, tritanopia is blue-blindness, and achromatopsia is total color blindness. Together they cover the most common deficiencies.
How accurate is the simulation?
It applies widely used color transformation matrices per pixel, which is a good approximation. Real color vision varies per person, so treat it as a design guide, not a diagnosis.
Can I test my brand colors?
Yes. Pick any color and the tool shows the original and simulated hex values side by side, which is perfect for checking text and button contrast.
Preview
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