this program is free You press the Print Screen key to copy a screenshot to the clipboard, load a graphics-editing program, create a new file, paste the screenshot from the clipboard, zoom in on the object, use the "Pick Color" tool, and finally copy the HTML code of the color to the clipboard software homepage : instant-eyedropper.com/ download link : instant-eyedropper.com/download/InstantEyedropper.exe
Theres also a freeware app called Pixie, its a floating window that gets detailed color information for the pixel under your mouse. It doesn't require taking a screenshot.