Hue is one of the main properties of a color, defined technically (in the CIECAM02 model), as “the degree to which a stimulus can be described as similar to or different from stimuli that are described as red, green, blue, and yellow,” (the unique hues). The other main correlates of color appearance are chroma, saturation, lightness, and brightness. Usually, colors with the same hue are distinguished with adjectives referring to their lightness and/or chroma, such as with "light blu… (More on Hue)