This module provides utility functions for working with the color names
and color value formats defined by the HTML and CSS specifications for
use in documents on the Web.
Support is included for the following formats (RGB colorspace only;
conversion to/from HSL can be handled by the ``colorsys`` module in
the Python standard library):
* Specification-defined color names
* Six-digit hexadecimal
* Three-digit hexadecimal
* Integer rgb() triplet
* Percentage rgb() triplet
WWW: https://bitbucket.org/ubernostrum/webcolors/overview/
73f6b3ca0b