A lovely online source of brand colors complete with color numbers—no guessing. Includes colors from Adobe, Airbnb, Amazon, AOL, Basecamp, Behance, Better Business Bureau (they have colors?), Bing, bitly, Boeing, Digg, Dribbble, Drupal, Ebay, Firefox (a big palette), Freshbooks (very fresh), Google, HootSuite, Kickstarter, Klout, Microsoft, and many more. Memorable address BrandColors.net.
Has a search function to find one quickly.
Click on the colors to see the color number.
You can download the whole set in several file formats including swatches to import into Photoshop, and I suspect other programs as well but I probably haven’t ever heard of them.
My favorite for color storage is still Color Schemer. It amazing. I couldn’t do without it.