Recommend Techvision Color Picker 1.2

Pick colors from anywhere on your screen with a single mouse click or a key press. Shows you the color in a variety of ways, including RGB and HSL pairs, Delphi, C++ or HTML constants. With a single click you can copy the desired constant into the Windows clipboard. Includes a smart zoom lens with magnification factor up to 32x for accurate pixel positioning. Minimize to SysTray when unused. Activated with a single hotkey or mouse click.