On the spectrum, those colors are to the left of pure cyan (towards pure blue), not on the right side (towards pure green).

In that Making of Star Wars screenshot mosaic I did, all of the shots have it basically the same hue, and it's more cyan than blue, a lot like my saturation tweak of Harmy's. Consider the possibility that the wide shot is right, and the other shots aren't cyan enough. Notice that when you compare the two screenshots, all of the colors look colder in the second shot, not just the lightsaber. I'm looking at Luke's hair and face - they look colder than in the wide shot.