Color Vision Deficiency (CVD) Simulator
Color Blindness Simulator
Ensure your visual assets and UI palettes remain distinguishable for the 300 million color-blind people worldwide.
WCAG Contrast & Accessibility Studio
Evaluate WCAG 2.1 compliance ratios and Color Vision Deficiencies
AAA ≥ 7.0AA ≥ 4.5Large ≥ 3.0
Normal Text (16px)AAA Pass
The quick brown fox jumps
High-contrast accessibility preview testing readability in real-time.
Calculated Ratio4.52 : 1
Normal (AA)Pass
Large TextPass
Enhanced (AAA)Fail
Test Against:
Color Vision Deficiency (CVD) SimulationHow color-blind users perceive your palette
Deuteranopia (Green-Weak)
Affects ~6% of men. Red and green hues appear brownish-yellow. Critical for avoiding red-green-only status badges.
Protanopia (Red-Weak)
Affects ~2% of men. Red cones are absent; reds appear darker or dark gray/brown.
Tritanopia (Blue-Yellow)
Affects ~0.1% of people. Blues look greenish and yellows look violet/light gray.
Achromatopsia
Complete absence of color perception. Vision is strictly monochromatic based on luminance contrast.