Color Picker Free is a very good color picker software for Mac.
This program helps you identify and save color codes on your Mac.
ENGLISH Color Picker is an application designed for all developers and graphic designers...
Color Picker allows all Cocoa developers to create and pick their colors.
Get and edit hexadecimal HTML color codes in the standard Mac OS X color panel.
Displays the red, green, and blue values in HTML-friendly hexadecimal values.
Blink1ColorPicker is an open source application that allows you pick colors.