Graphic Terms

HSL (for hue, saturation, lightness) and HSV (for hue, saturation, value; also known as HSB, for hue, saturation, brightness) are alternative representations of the RGB color model, designed in the 1970s by computer graphics researchers to more closely align with the way human vision perceives color-making attributes.  source

In painting, a hue is a pure pigment—one without tint or shade (added white or black pigment, respectively). source