Colour palettes recommended for use with colour blind audiences.
cbPalette8
cbPalette13
cbPalette15
Character vectors of lengths 8, 13 and 15.
An object of class character
of length 8.
An object of class character
of length 13.
An object of class character
of length 15.
cbPalette8
: Wong B. 2011. Color blindness. Nat. Methods. 8:441.
doi:10.1038/nmeth.1618
cbPalette15
: http://mkweb.bcgsc.ca/biovis2012/color-blindness-palette.png
Since R 4.0, cbPalette8
is available in base R as palette.colors(8)
.
cbPalette15
is a Brewer palette.
Because colours 4 and 7 are difficult to distinguish from colours 13 and 3,
respectively, in individuals with tritanopia, cbPalette13
omits these
colours (i.e. cbPalette13 <- cbPalette15[-c(4, 7)]
).
data("cbPalette8")
plot.new()
plot.window(xlim = c(1, 16), ylim = c(0, 3))
text(1:8 * 2, 3, 1:8, col = cbPalette8)
points(1:8 * 2, rep(2, 8), col = cbPalette8, pch = 15)
data("cbPalette15")
text(1:15, 1, col = cbPalette15)
text(c(4, 7), 1, "[ ]")
points(1:15, rep(0, 15), col = cbPalette15, pch = 15)