catecolors

Color tables gleaned from various sources that are suitable for displaying categorical (qualitative) colors.

Color tables included

Glasbey: (GLASBEYLUT) Discrete 256-color table devised by Glasbey et al suitable for categorical coloring.
Watlington: (WADLUT) JA Watlington (Wad's) Optimum 16 color palette
Kelly: (KELLYLUT) KL Kelly's Twenty-two colors of maximum contrast
Boynton: (BOYNTONLUT) RM Boynton's Eleven colors that are almost never confused

References:

Glasbey (GLASBEYLUT)

Glasbey, Chris, et al. "Colour displays for categorical images." Color Research & Application 32.4 (2007): 304-309.
Adpated from an implementation in ImageJ by Gabriel Landini
Also see ImageJ wiki

Watlington (WADLUT)

Watlington's personal webpage

Kelly (KELLYLUT)

K. L. Kelly. Twenty two colors of maximum contrast. Color Engineering, 3:26{27}, 1965.
http://www.iscc.org/pdf/PC54_1724_001.pdf
A post by Ohad Schneider

Boynton (BOYNTONLUT)

Robert M. Boynton. Eleven Colors That Are Almost Never Confused. In SPIE Proc. #1077 - Human Vision, Visual Processing, and Digital Display, pages 322-332, Bellingham, WA, 1989. SPIE.
A post by Ohad Schneider

Installation

It's fairly easy to install using Hadley Wickham's devtools.

library(devtools)
install_github('btupper/catecolors')

Usage

library(catecolors)
plot(1:10, pch = 19, col = glasbey(11:20), cex = 3)
show_glasbey()