Just to make it more confusing theres also HSV and HSI invented or developed by xerox parc, Pixar founder chap Alvy Ray Smith..think he also came up with alpha channels
For me, I cannot tell part much of the reds (350deg to 15deg), greens (95deg to 130 deg), cyans (166deg to 185deg), and blues (225deg to 255deg). The hues in the listed ranges look identical to me :(
Well, everyone’s perceptions are theoretically different. If it’s any consolation, the greens from 95° to 130° are typically a flat zone for humans of all ages.