For a game I'm doing I need to make tokens in 8 different colors not including black or white. More than 8 would be good but I want at least 8. I can get red, green, blue, yellow, magenta, and purple with the combinations of 0 and 255 for the RGB values, but I need 2 more. I've tried lots of other colors (e.g., brown, pink, pale blue) but I always seem to have one color that is too close to one of the others to be quickly distinguishable on the device. I suspect I shouldn't use primaries for the first 6 if I need a total of 8.
Are there any color mavens out there who can say what RGB values to use to make the most distinct 8 colors? There's probably a color theory answer to this question but I'm not up on color theory.