number=nonnegint

the number of intermediate colors to compute (default is 10)

space=string

the color space in which to compute the intermediate colors. By default this is inferred from the colors spaces of the input.

best

if this keyword is given, a heuristic is used to get a well-spaced set of colors using the Jab perceptual color space.

displayable

if this keyword is given, then each output color will be displayable

The Gradient command computes a number of intermediate colors that transition between the two colors in the input range.

with(ColorTools):

G := Gradient("Red".."Blue");

$G≔\left[⟨RGB\; :\; 1\; 0\; 0⟩\,⟨RGB\; :\; 0.909\; 0\; 0.0909⟩\,⟨RGB\; :\; 0.818\; 0\; 0.182⟩\,⟨RGB\; :\; 0.727\; 0\; 0.273⟩\,⟨RGB\; :\; 0.636\; 0\; 0.364⟩\,⟨RGB\; :\; 0.545\; 0\; 0.455⟩\,⟨RGB\; :\; 0.455\; 0\; 0.545⟩\,⟨RGB\; :\; 0.364\; 0\; 0.636⟩\,⟨RGB\; :\; 0.273\; 0\; 0.727⟩\,⟨RGB\; :\; 0.182\; 0\; 0.818⟩\,⟨RGB\; :\; 0.0909\; 0\; 0.909⟩\,⟨RGB\; :\; 0\; 0\; 1⟩\right]$

H := Gradient("Red".."Blue", best);

$H≔\left[⟨RGB\; :\; 1\; 0\; 0⟩\,⟨RGB\; :\; 0.905\; 0.198\; 0.179⟩\,⟨RGB\; :\; 0.813\; 0.265\; 0.279⟩\,⟨RGB\; :\; 0.722\; 0.303\; 0.357⟩\,⟨RGB\; :\; 0.635\; 0.324\; 0.416⟩\,⟨RGB\; :\; 0.552\; 0.334\; 0.459⟩\,⟨RGB\; :\; 0.478\; 0.334\; 0.487⟩\,⟨RGB\; :\; 0.412\; 0.324\; 0.516⟩\,⟨RGB\; :\; 0.346\; 0.306\; 0.563⟩\,⟨RGB\; :\; 0.268\; 0.281\; 0.641⟩\,⟨RGB\; :\; 0.161\; 0.234\; 0.77⟩\,⟨RGB\; :\; 0\; 0\; 1⟩\right]$

Swatches([G[], H[]], rows=2);

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

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

The ColorTools[Gradient] command was updated in Maple 2023.

The best option was updated in Maple 2023.