I loved it when CorelDRAW X5 gave us eyedroppers in almost every place you need to choose colors. Yet there are times I’m working in other programs and need to select a color. Color Cop allows you to select colors from anything you can see on screen. It will give you both the RGB and Hex values for the selected color.
To get a better idea of what it does, you may want to watch the short video on the Color Cop Screenshots page of the program in action. You’ll see the size of the eyedropper can be changed and you can even zoom in on an area to get just the right pixel selected. Best of all, it is free. If you like it, consider making a donation.