What color is Achilles's hair?

Sandy Athena came, sent by the white-armed goddess

Hera, who loved and watched over both men.

She stood behind Achilles and grabbed his sandy hair. Homers, The Iliad, Book I, lines 205-207 More info: Achilles' son by Deidamia of Skyros was Neoptolemus. His "nickname" was pyrrhus, which literally means "red hair". So it is likely either Achilles or Deidamia had red hair.