Hue
Hue is one of the main properties of a color, defined technically, 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,". Orange and violet are the other hues, for a total of six, as in the rainbow: red, orange, yellow, green, blue, violet. The other main correlatives of color appearance are colorfulness, chroma, saturation, lightness, and brightness. Usually, colors with the same hue are distinguished with adjectives referring to their lightness and/or colorfulness, such as with "light blue", "pastel blue", "vivid blue". Exceptions include brown, which is a dark orange, and pink, a light red with reduced chroma. In painting color theory, a
hue refers to a
pure color—one without tint or shade. A hue is an element of the color wheel. Hues are first processed in the brain in areas in the extended V4 called globs.