Ah, the good ol' Color Wheel. You remember this guy, right? Didn't we all make one of these in grade school with too much glitter and tempera paint? Just me? Okay.
Today we're focusing on that outer ring, the Hue. Like the picture says, Hue is the pure color without any gray, black or white added. This color wheel has some other stuff going on, as you can see, but let's just focus on the Hues, shall we?