Check Contrast for Color Blind Users

What is the most common type of color blindness?

Deuteranopia (green-blind) and deuteranomaly (green-weak) are the most common, affecting about 6% of men. Protanopia (red-blind) affects about 2% of men. Together, red-green color blindness accounts for 99% of cases. Tritanopia (blue-blind) is rare, affecting less than 0.01% of the population. Design for red-green deficiency as a priority.