Tests for color-blindness

Color blindness is a common problem, affecting a number of people. The extent of color-blindness varies, with total color blindness in some people, and inability to make out some colors in others. For example, people with partial color blindness often have a red-green deficiency that can be classified into 2 types. With partial, ability to clearly distinguish colors such as red, green, yellow and blue is low.
If you feel that you have color blindness, whether partial or total, you should go to a doctor and get a complete check done. As an additional level, you can do a quick check using this website (but this is a not a substitute for the real thing).
Read about the problems
Take the actual test