Cool Phase And Warm Phase

An object in "cool" light has a "cool phase" in its bright part and a "warm phase" in its dark part. If the color light is not obvious, it should be divided according to the strength of the two colors. Under normal circumstances, The cooling and warming of light source color plays a very important role in the change of color in nature. 

the morning and evening daylight, light, fire, etc. are warm colors, and the noon sunlight, sky light, incandescent light, etc. are cold light. We paint still life mostly in the room, the light source is mostly from the window through the sky. The general rule under the exposure of colored light is: in the "warm" light of the object, its bright part is a "warm color phase", then its dark part is a "cool color phase".

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