The Chroma command returns the chroma of a Color object, which is a float between $0.$ and $1.0$ representing the intensity of a color defined as the maximum difference between any of its red, green, and blue channels.

$\mathrm{Chroma}\left(\mathrm{ColorTools}:-\mathrm{Color}\left(''black''\right)\right)$

$0.$

$\mathrm{Chroma}\left(\mathrm{ColorTools}:-\mathrm{Color}\left(''red''\right)\right)$

$1.0000000$

$\mathrm{Chroma}\left(\mathrm{ColorTools}:-\mathrm{Color}\left(''pink''\right)\right)$

$0.24705882$

The ColorTools[Color][Chroma] command was introduced in Maple 2017.

For more information on Maple 2017 changes, see Updates in Maple 2017.