Add Color - A color picker with many features. Free.
A multifunctional color picker that makes selecting color an easy task.
You can enter the color in decimal, hexadecimal, select it from the palette, capture it
from the current screen, or paste it to or from the clipboard.
It fully supports web safe colors by finding the closest to the current and displaying
the pallete. You can make, save or load your custom palette. All this and more - freeware.