This explains how OS X renders an image for output, to the display, printer, etc., and what rendering intent is.
colour
Explaining colour management for the non-pro user. Why do you need it?
New Wide Colour gamuts should make all colour rendering more faithful. Benefits are greatest to those for whom faithful colour is most important.
Should all displays use Apple’s True Tone automatic white balance adjustment?
These give you control in scripts over the presence of badges, captions, and general appearance of writing spaces in the Map view.
How can I read RGB and L*a*b* values from images into a spreadsheet?
Next time someone wants to know what colour Sennelier’s Bordeaux (number 008) oil pastel really is, the answer is here in L*a*b*.
It is evident that the rules of colour harmony vary widely and lack a solid basis. Opinions have changed often. (Rolf G Kuehni)
Semantic primes represent “the complete inventory of simple universal concepts that are embedded in the lexicons of all (or most) human languages.” Do they suffice?
Painting is about form, light, and colour. Here is a short summary of the practical points developed in the previous articles on colour.
The Eclectic Light Company 