I happen to find this website(http://coolors.co) a few months ago. It’s a great and simple color schemes generator that I have found on the web. Plus you can book mark your color scheme to go back to anytime. Be sure to check out the tutorial too.
I recently found these great Adobe InDesign and Illustrator Cheat Sheets via Terry White’s blog. If you use Adobe InDesign or Illustrator I’m sure you will also find these to be a great reference tool as well.