How the Color Deficient Person Sees the World
This is how numbers look to a dichromate (only two photopigments) on a color vision test.
Tritan is not included because it is extremely rare.
This is how numbers look to an anomalous trichromate (three photopigments, one pigment is just a little off) on a color vision test. The defect is not as severe compared to a dichromate. In fact, some of the test numbers can be seen by an anomalous trichromate.
This is how objects look to a dichromate
The source of the last three pictures is critiquewall.com by Paul Martin
Click here to take a test by Jay Neitz. See how well you can identify objects if you were colorblind.
Reference: This page was designed using the color filter from http://colorfilter.wickline.org