Color Exchange Format
From Just Solve the File Format Problem
A standard created by X-Rite for the exchange of color information within the graphic arts community.[1][2]
File Information
CXF are XML files which must contain, at a minimum, the required namespace information in the root CXF element
(<CxF xmlns=”http://colorexchangeformat.com/CxF3-core”>
).
Became ISO standard in 2015. ISO 17972-1:2015[3]