Simulate color blindness

Preview how a palette may appear under a selected color-vision condition.

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ToolColor Blindness Simulator
Input
Output
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Preview

How it works

RGB colors are transformed through a selected color-vision-deficiency simulation matrix or LMS-space model, then converted back to display RGB. The result approximates one observer condition and is not a clinical diagnosis.

  • Simulation reveals confusion pairs so designs can add cues beyond hue.

Worked example

Simulate Red
See how pure red appears with different types of color blindness
Input
											#FF0000
Output
												Original: #FF0000

Protanopia (no red): #918E00
Deuteranopia (no green): #9FB300
Tritanopia (no blue): #F20000
Achromatopsia (no color): #4C4C4C

When to use this

Charts, status colors, maps, and accessibility reviews simulate color-vision conditions.

Edge cases

  • Different simulation models produce different approximations.
  • A color-only distinction can remain ambiguous after transformation.
  • Contrast and texture still matter even when hues separate.

References