Color Blindness Simulator

Visualize how colors appear to people with different types of color vision deficiencies.

Select Base Color

Supports HEX (e.g., #FF5733)

Why check this?

~8% of men and ~0.5% of women have some form of color blindness. Ensuring accessibility improves user experience for everyone.

Understanding Color Blindness

Color blindness, or color vision deficiency (CVD), affects approximately 1 in 12 men (8%) and 1 in 200 women worldwide. This tool helps designers and developers ensure their content is accessible to everyone by simulating different types of vision deficiencies.

Protanopia

Red-Blind

People with Protanopia cannot perceive red light. Red colors appear black or dark brown, and orange/yellow/green can look indistinguishable.

Deuteranopia

Green-Blind

The most common form. People cannot perceive green light. Reds and greens look brownish and are hard to distinguish from each other.

Tritanopia

Blue-Blind

Very rare. People cannot perceive blue light. Blue and green can be confused, and yellow may disappear or look violet-ish.

Design Tips for Accessibility

  • Don't rely on color alone: Use icons, text labels, or patterns to convey information (e.g., error messages should mention "Error", not just be red).
  • Check Contrast: Ensure there is enough contrast between text and background, especially for color-blind users who may see colors as similar brightness levels.
  • Avoid Red/Green combinations: Since Deuteranopia is common, avoid placing red and green directly next to each other for critical data (like charts).