Choice of colors in print and graphics for color-blind readers

I’m preparing a series of plots for publication, but one of my primary intended readers happens to be color-blind. I like to use the printer’s traditional red in addition to black as a second color, but I have never really found out if my reader can “see the difference” or not.

My question is: is there an accepted set of colors which combine sensitivity to this particular disability without sacrificing the maximum legibility and impact that one can achieve with the black/red(/third color?) combination?