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Nowadays, basically any data display system is based on a certain kind of RGB (red, green, blue) tone solid model. RGB is the most effective way to represent most of the hues that people can brush (some hues can not be effectively caused, but this is another discussion). Camera, mobile phone, TV, computer display screen and digital information all use RGB color solid model and RGB color space. You may be surprised to hear this. After all, haven't you ever been taught a female model in RYB (red, yellow, blue) colors when you were a child? Although you may have already learned RYB color solid model, you do not apply RYB
