When making charts, graphs, or other figures to be presented to an audience, use a safe color palette, and use color-alternate hints to differentiate data (e.g., shading, hatching, varying line thickness).
“How to make figures and presentations that are friendly to Colorblind people” is the best document I’ve seen on the topic. Save the PDF for handy reference. The authors point out that protanopes and deuteranopes can’t see red laser pointers very well or at all, so use a green laser pointer instead.
