Are you also tired of waiting on Photoshop to load so you can use their colorpicker to find out which value that particular color has that you’ve just seen?

Well so was I. I did a little google-fu and downloaded the trial version of Ades Color Picker.
After installing the software, the “picker” installs itself into your systemtray.

When you click on it, a menu pops up where you can select the color library for example.

Just click it and hover above the color you want the value of, it’s that simple.
source: adesblog.com/