Yup, open your avvy in Photoshop, push I - (shortcut for the eyedropper). Then just click on what ever colour you wanna sample, click on the colour swatch, and it'll open the menu that displays the hex code.
Have you used the eye dropper tool in photoshop?? Faaark, just had to blast some missy elliot through the sub - coz the people upstairs have been playing shitty rock most of the night *puke* Turned it right up xD;;