A palette data structure is an object that stores a collection of named colors in a specified order.

If names are not specified for the colors in the palette, names will be created using the ColorDescription command.

The palette structure is primarily used to register new collections of colors using the AddPalette command.

As stand-alone objects, palettes recognize the indexing operator [] and can be indexed as if they were lists (using integer indices) or tables (using color name strings).

For all palettes except those of type dictionary, when indexed using a higher number than the number of colors specified in the definition, the palette will automatically be extended using the ExpandPalette command.

$\mathrm{with}\left(\mathrm{ColorTools}\right)\:$

$\mathrm{grays}≔\mathrm{Palette}\left(\left[\mathrm{seq}\left(\mathrm{Color}\left(\left[\mathrm{`\$`}\left(\frac{i}{10}\,3\right)\right]\right)\,i=0..10\right)\right]\right)$

$\mathrm{grays}≔⟨Palette:BlackDark\; GrayDark\; Gray\; 1Dark\; Gray\; 2GrayGray\; 1Gray\; 2Light\; GrayLight\; Gray\; 1Light\; Gray\; 2White⟩$

$\mathrm{grays}\left[2\right]$

$⟨RGB\; :\; Dark\; Gray⟩$

$\mathrm{grays}\left[8..-2\right]$

$\left[⟨RGB\; :\; Light\; Gray⟩\,⟨RGB\; :\; Light\; Gray\; 1⟩\,⟨RGB\; :\; Light\; Gray\; 2⟩\right]$

$\mathrm{grays}\left[\right]$

$⟨RGB\; :\; Black⟩,⟨RGB\; :\; Dark\; Gray⟩,⟨RGB\; :\; Dark\; Gray\; 1⟩,⟨RGB\; :\; Dark\; Gray\; 2⟩,⟨RGB\; :\; Gray⟩,⟨RGB\; :\; Gray\; 1⟩,⟨RGB\; :\; Gray\; 2⟩,⟨RGB\; :\; Light\; Gray⟩,⟨RGB\; :\; Light\; Gray\; 1⟩,⟨RGB\; :\; Light\; Gray\; 2⟩,⟨RGB\; :\; White⟩$

$\mathrm{primary}≔\mathrm{Palette}\left(\left[''Red''=\mathrm{Color}\left(''\#f00''\right)\,''Blue''=\mathrm{Color}\left(''\#00f''\right)\,''Green''=\mathrm{Color}\left(''\#0f0''\right)\right]\,\mathrm{palettetype}=''fill''\right)$

$\mathrm{primary}≔⟨Palette:RedBlueGreen⟩$

$\mathrm{primary}\left[''Red''\right]$

$⟨RGB\; :\; Red⟩$

$\mathrm{Swatches}\left(\mathrm{primary}\,\mathrm{rows}=1\right)$

$\mathrm{Lookup}\left(\mathrm{primary}\,''Red''\,\mathrm{shade}=''point''\right)$

$⟨RGB\; :\; 0.806\; 0.176\; 0.0894⟩$

$\mathrm{primary}\left[1..5\right]$

$\left[⟨RGB\; :\; Red⟩\,⟨RGB\; :\; Blue⟩\,⟨RGB\; :\; Green⟩\,⟨RGB\; :\; 0.732\; 0.602\; 0.969⟩\,⟨RGB\; :\; 0\; 1\; 1⟩\right]$

$\mathrm{Palette}\left(\left[\right]\right)$

Error, (in ColorTools:-Palette:-ModuleCopy) invalid input, a palette must be constructed with at least one color

The ColorTools[Palette] command was introduced in Maple 16.

For more information on Maple 16 changes, see Updates in Maple 16.