Color Systems Have Three Basic Characteristics

Colors with color systems have three basic characteristics: hue, purity (also known as chroma, saturation), and brightness. It is also known as the three elements of color or the three attributes of color in colorology.

Hue is the biggest characteristic of color. The so-called hue refers to the name that can more accurately represent a certain color color. Such as rose, orange, lemon yellow, cobalt blue, ultramarine, emerald green... In terms of optical physics, the various hues are determined by the spectral composition of the light that enters the human eye.
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