http://colorschemedesigner.com/
Use, NAO!
I've been using triad schemes lately but I was just using a color wheel image that I opened in PS and selected with Eye Dropper, but woo now I can just use this :P Found it 'cuz I was flipping through Colorful images in Photobucket and there was a screenshot of this
You can also go to "Color List" at the bottom and go to each color code for all the shades/hues of the selected colors *o*