See how your colors look to people with color-vision deficiencies — about 1 in 12 men and 1 in 200 women.
Distinct colors can collapse into near-identical tones. If two swatches become hard to tell apart in a row below, don't rely on color alone to distinguish them.
Color vision deficiency shifts how the eye’s cone cells respond, so certain hues collapse toward one another. The simulator applies a transformation matrix for each deficiency type to your colors, remapping them the way affected cones would — letting you see whether two colors that look distinct to you would still be distinguishable.
Enter a color or palette (or load an image) you want to test.
Compare protanopia, deuteranopia, tritanopia and achromatopsia views side by side.
If two colors merge under a simulation, increase their lightness difference or add a non-color cue like a label or pattern.