The use of colored text may create a barrier for people with vision problems as well as for those with cognitive disabilities.
This does not mean you have to turn all images to black and white or remove all color. It does mean that color cannot be the only way to convey important information. It should also be used judiciously.
Color blindness is actually a color vision deficit where missing pigments in the cones of the eye cause difficulty in distinguishing certain colors. Most color deficiency is red-green or blue-yellow. Very few people are unable to see any color. Color deficiencies can be hazardous, and for that reason people with vision deficits are excluded by law from certain occupations.
The links below will open images that replicate how people with various forms of color blindness would see the colors.
This disability covers a broad range, however, for this topic we will focus on these functional disabilities:
This is an example too often found in courses:
Check the red dates on the assignments page for the latest due dates. Remember to submit your written assignments as well as complete the weekly discussion.
Pick one color as a accent color, or simply use the bold and /or italics to draw the reader's attention.