I recently discovered Design Seeds and I can tell it'll be a favorite for a long time to come. Individualized color palettes are created from professional photos of everything from food to places. Search the archives by creating a color value or look up swatches by themes like "vintage" or "mineral". If you find yourself gravitating towards one color, just print the image and take it to your local hardware store to have them match the shade. Gorgeous and handy -- it's now a must-have in my tool kit.
Images: Design Seeds.