Color Blindness Simulator

1. Enter a color — Type a hex code or RGB value, or use the color picker, or adjust RGB sliders.
2. Compare simulations — See how the color appears with normal vision, protanopia (red-blind), deuteranopia (green-blind), and tritanopia (blue-blind).
3. Design accessibly — Use the simulation to ensure your color choices are distinguishable by users with color vision deficiencies.

A Color Blindness Simulator uses mathematical models of cone cell deficiencies to approximate how colors appear to individuals with different types of color vision deficiency (CVD). It applies transformation matrices based on the LMS (Long, Medium, Short wavelength) cone response model.

About 8% of men and 0.5% of women have some form of color blindness. This tool helps designers and developers create accessible color schemes by simulating the three most common types: protanopia (reduced red sensitivity), deuteranopia (reduced green sensitivity), and tritanopia (reduced blue sensitivity).