The CVD plot palette is a selection of colors to be more easily distinguishable for viewers with all types of color defective vision (color blindness). It is designed for coloring filled areas. There are twelve colors in the palette, all of which should be distinguishable by viewers with deuteranopia and protanopia. The first nine should be distinguishable by viewers with tritanopia.

ColorTools:-DisplayPalette("CVD",noextend);

Two variations of this palette are provided and named CVD2 and CVD3 that are optimized for protanopia and tritanopia respectively. They have the same initial colors, but will produce different colors when automatically extended.

$\mathrm{plot}\left(\left[x\,x^3\right]\,x=-1..1\,\mathrm{color}=\left[''CVD\; 2''\,''CVD\; Blue''\right]\right)$

$C≔\mathrm{ColorTools}:-\mathrm{Color}\left(''CVD\; 5''\right)$

$C≔⟨RGB\; :\; 0.941\; 0.941\; 0.196⟩$

$\mathrm{plots}:-\mathrm{setcolors}\left(''CVD''\right)\:$

$P≔\mathrm{ColorTools}:-\mathrm{GetPalette}\left(''CVD''\right)$

$P≔⟨Palette\; CVD:BlueOrangePale\; GreenPurpleYellowRedLight\; BluePale\; PurpleGreenGreen\; BluePale\; OrangeLight\; Green\; Blue⟩$

$P\left[1\right]$

$⟨RGB\; :\; Blue⟩$

$n≔\mathrm{numcolors}\left(P\right)$

$n≔12$

$\mathrm{plot}\left(\left[\mathrm{seq}\left(\sin \left(x+\frac{i\mathrm{\pi }}{n}\right)\,i=1..n\right)\right]\,x=0..2\mathrm{\pi }\,\mathrm{axes}=\mathrm{boxed}\,\mathrm{color}=:-\mathrm{GetColors}\left(P\right)\left[1..n\right]\,\mathrm{legend}=:-\mathrm{GetColorNames}\left(P\right)\left[1..n\right]\,\mathrm{numpoints}=25\,\mathrm{style}=\mathrm{line}\right)$

$P\left[16\right]$

$⟨RGB\; :\; 0.125\; 0\; 0.165⟩$

$\mathrm{Lookup}\left(P\,1\,\mathrm{shade}=''line''\right)$

$⟨RGB\; :\; -0.00102\; 0.234\; 0.618⟩$

$\mathrm{Lookup}\left(P\,1\,\mathrm{shade}=''point''\right)$

$⟨RGB\; :\; -0.00161\; 0.155\; 0.558⟩$

http://mkweb.bcgsc.ca/colorblind/