The :pyImageCms module provides color profile management support using the LittleCMS2 color management engine, based on Kevin Cazabon's PyCMS library.
PIL.ImageCms
The ICC color profiles are wrapped in an instance of the class :pyCmsProfile. The specification ICC.1:2010 contains more information about the meaning of the values in ICC profiles.
For convenience, all XYZ-values are also given as xyY-values (so they can be easily displayed in a chromaticity diagram, for example).