Pixeur

Never be curious about any color you see on your screen. With Pixeur you can easily view the color, RGB, Hex, and Long value of any color you see. Pixeur will also keep a history of all colors you have selected, so going back is as simple as choosing the color from the Color History list.
Features;
Select any color on the screen
Go back to any color with the Color History
Advanced Color Selector
Small and compact design
Easily copy values to the clipboard
Conveniently located in the System Tray
Support for Hue, Saturation, and Brightness
Launch a color scheme to keep active during development
Active color scheme stays refreshed as you select colors
Smart Zoom window for ease of selecting colors