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Color Blindness Simulator

Preview how your colors appear for different forms of color vision deficiency. Enter any color and compare original versus simulated swatches instantly.

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

Base color

Accepts hex, rgb(), hsl(), or named CSS colors. Try values like #ff6b6b or hsl(280, 90%, 60%).

Simulation type

Original color

#3b82f6

Protanopia (red-blind)

#5a5ada

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.