python3-colour binary package in Ubuntu Bionic amd64

 Converts and manipulates common color representation (RGB, HSL, web, ...)
 .
 Features:
 .
  * Damn simple and pythonic way to manipulate color representation
  * Full conversion between RGB, HSL, 6-digit hex, 3-digit hex, human
    color
  * One object (Color) or bunch of single purpose function (rgb2hex,
    hsl2rgb, ...)
  * web format that use the smallest representation between 6-digit
    (e.g. #fa3b2c), 3-digit (e.g. #fbb), fully spelled color
    (e.g. white), following W3C color naming for compatible CSS or HTML
    color specifications.
  * smooth intuitive color scale generation choosing N color gradients.
  * can pick colors for you to identify objects of your application.

Source package