Looking for an app to name colors on Mac (colorblind)?
There are 2 apps on mac that name colors to help people with color blindness: 


A free app called ColorCompass. It basically does the same job as WhatColor, although with a more simple color naming system. It's small, has instant color naming and stay on top of other windows. 
Also a free app called ColorQuest. But this app takes more screen space and is quite slow. I did not find a way to make it stay on top, a deal breaker for me.


As a background, I am colorblind too and I personally use ColorCompass on my Mac to work with Mac Office all day long on a daily basis.