Accessibility Tools

Color Blind Simulator

See how your images and colors appear to people with different types of color blindness (protanopia, deuteranopia, tritanopia, achromatopsia)

Vision Type

Deuteranopia

No green cones (most common) · 1.2% males

Palette — Normal vs Simulated

Top row: original palette. Bottom row: how those colors appear to someone with deuteranopia.

Image Simulation

Drop an image to simulate how it appears with color blindness

Max size: 15MB

Simulations use the Machado-Oliveira-Fernandes (2009) confusion-line matrices applied in linear-RGB space. Approximately 8% of men and 0.5% of women have some form of color vision deficiency, making red-green combinations the most common accessibility issue on the web.

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Color Blind Simulator — Free Online Tool | FreeTool24 | FreeTool24