AdesClrPicker is a very user friendly, small yet powerful color picker program. It allows you to capture colors anywhere on the screen with a single click of the mouse and output it in HTML, RGB, VB, C++ or Delphi color codes.
It can store last 10 captured colors in the memory, last 10 captured colors can be displayed in a floating menu as well, which is draggable for easy positioning. Floating menu is always visible and stays on top of all windows.
Color Library allows you to save your colors in txt format. Or export them as image (png, gif, jpg). You can also export your color codes in Adobe Photoshop swatches format (i.e color table).