Best way to pick a color from an Image

Question

What is the best possible way to pick a color from the image ?

What I need is that, when I move the cursor to any particular point in the image, Hex code of the color at the cursor should be displayed.

Is there any free utility for that?

Even if it is not an Image, say I am working on any windows application having various colors, Is there any way to pick the color ?

Answer 1

PicPick is nice:

It is an all-in-one program that provides full-featured screen capture tool, intuitive image editor, color picker, color palette, pixel ruler, protractor, crosshair and even whiteboard.

Answer 2

I use Pixlr on account of it being web-based, so quick and easy to use anywhere that supports Flash.

Answer 3

I like Colorzilla when using Firefox. Simply use the eyedropper to click anywhere within the web page, including images, and it returns the RGB and Hex code.