Compatibility: OS X 10.9 or later 64-bit

ColorSnapper2 is the OS X color picker app for designers and developers which makes it easy to collect, adjust, organize, and export colors of any pixel of the screen. It is activated via a system-wide hotkey, giving you a magnifying glass to easily pick any pixel you need, even from retina displays. The resulting color is copied to the clipboard in a format of your preference.

Homepage: https://colorsnapper.com