I’m working on a few graphs for a presentation. In a previous incarnation, I distinguished two partitions of my data using the colors red and green. This made sense intuitively (the red ones had something broken, and the green ones were a-ok), but I realized that people with red-green colorblindness would not be able to distinguish the different graphs. I switched the color scheme to white and gray, which should enable everyone to distinguish the two groups.
I also have a second way of partitioning the data, and I don’t want to use the same color scheme for both. I initially used blue and yellow for these two groups, but that may be problematic. I can’t use gray and white for this partition because then the two different partitions would look the same. Does anyone have any suggestions for another color scheme for this data set? I’d like to find two color schemes that are both acceptable for the colorblind and unique enough that the graphs showing different partitions won’t be confused.