Instant Eyedropper is a system tray based application with a memory foot print of only around 1.2 MB, which allows you to view color values and automatically copy the values to clipboard in multiple formats, without having to access any interface.
After installation, the application is available in the system tray. The way it works, is that, to view the code of any color, left-click on the system tray icon and drag your mouse on top of any item on your desktop to view its color. A small window will popup along side the cursor, displaying the code of color in real-time. The popup window also has a pixel magnifier to locate the exact color you want.
Right-click the system tray icon to change the format of color values. Instant Eyedropper supports HTML, Hex, Delphi Hex, VB Hex, RGB and HSB color codes.
Select Options from the right-click menu to change startup behavior, Resolution of the pixel magnifier to specify number of pixels to show in the popup window, and specify the format style of color codes.
Download Instant Eyedropper from here