Often referred to as the basic color, hue is the quality of sensation according to which an observer is aware of the varying wavelengths of radiant energy. The dimension of color dictated by the wavelength of the stimulus that is used to distinguish one family of color from another, as red, green, blue, etc. The attribute of color by means of which a color is perceived to be red, yellow, green, blue, purple, etc. White, black, and grays possess no hue.
The attribute of color which is noted by such terms as blue, yellow, red, etc. A part of the Munsell system of color notation.
A perceived color dimension of visual stimuli.