If someone has issues with red then the person may also have issues with purple which would appear to look like blue.
Color blind combinations to avoid.
The rainbow on the right exemplifies what a person with red green color blindness might see when looking at the rainbow stripes on the left according to wikipedia.
Some color blind users are lacking the capability to detect the lower color wave frequencies associated with red.
Color combinations to avoid for people with color blindness include.
Red green green brown green blue blue gray blue purple green gray green black.
Also pink and gray together and gray and brown together can be problematic.
Figure 6 red and green color combinations also cause eye strain a red and green combination also brings up the issue of color blindness which apparently affects approximately 7 percent of men and 1 percent of women.
In an rgb color model purple is achieved by using blue and red together.
Inability to notice the difference between red and green colors is the most common form of color blindness.
That being said here s a few color combinations to avoid because they re a potential nightmare to color blind users.
Red green and brown 2.
Light green yellow.
For these users red color waves read as no signal or black.
How do you know if you re color blind.
Red and white is legible but indistinguishable from black and white.
These users confuse red and black so this contrast should be avoided whenever possible.
Green red green blue green brown green black green grey blue grey light green yellow blue purple.
Below is the tableau 10 color palette using a deuteranope simulation.