ColorZilla

ColorZilla is an add-on for the Mozilla Firefox web browser. This program works with colors and is therefore especially appreciated by web designers, developers and graphic artists. After installing the add-on, an icon of the program is displayed at the bottom of the browser window. This icon provides a "dropper" to get the color code from any part of the monitor.

There are also various color palettes and a number of other useful tools for working with color. Interesting tools include an online palette viewer that allows you to share palettes with other users online.