232 Dove Blue / Sky Blue
BrickLink: Sky Blue
This color was introduced in 2003 with Clikits and Star Wars, but it's mostly known as a Belville color (and the original Greedo's arms and legs). It was last used in a 2007 Star Wars set*.
*That part is, of course, a mixture of Sky Blue and White, so Lego doesn't consider it Sky Blue. We'll get to Multicombination colors later...