webcolors is a Python (2.7, 3.4+) module for working with HTML/CSS
color definitions.

Support is included for normalizing and converting between 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://github.com/ubernostrum/webcolors