colour blindness

It’s estimated that around 1 in 12 men (8%) and 1 in 200 women have some form of colour blindness. In the UK this means that there are approximately 2.7 million people affected, a considerable amount of the population, but they are often forgotten when it comes to designing websites and user interfaces.

Source: https://medium.com/@sidgtl/designing-for-colour-blindness-b74a9d012ef2#.zgtmzqtip

• Deuteranomaly is a red-green color-blindness. Affects 5.35% of the population.
• Protanomaly means a missing the L-cone, different intensities of red light. Affects 1.11% of the population.
• Deuteranopia is a red-green color blindness due to missing M-cone. Affects 1.1% of the population.
• Protanopia is a type of red-green color-blindness. Affects 1.03% of the population.
• Tritanopia is a blue-yellow colorblindness due to missing S-cone. Affects <1% of the population.
• Achromatopsia is rod monochromacy. Affects 0.003% of the population.

Source: http://christopher.org/introducing-colorfuzz/

Related Resources

Information

• What It's Like To Be Color Blind (VIDEO)
• Colour Accessibility
• A Pocket Guide to Colour Accessibility
• Designing for Colour Blindness
• Colour Blind Awareness

Tools

• Colorfuzz - simple accessibility color blindness testing site
• Paciello Group: Colour Contrast Analyser - PC versions provides simulation for different types of colour blindess and greyscale
• Sim Daltonism - color blindness simulator for OSX and iOS