What is the relationship among the three primary colors, three elements and colors of color?

What is the relationship between three primary colors, three elements and color? Primary colors, also called primary colors, cannot be mixed with other colors, while other colors are mixed with three primary colors. The three primary colors refer to red, yellow and blue. The three elements refer to hue, chromaticity and chromaticity (including lightness and purity) of a color. The relationship between them is: 1 primary color is the most basic hue among many hues; Among the three primary colors, red, yellow and blue tend to be warm and cold, in which red and yellow are warmer and blue is cooler; Red, yellow and blue in the three primary colors have different levels of light and shade. If red, yellow and blue are photographed in black and white, we will find that yellow is the brightest, followed by blue, and red is the darkest (almost black); Red, yellow and blue are the most saturated colors in many shades. Color: It is the product of visible light acting on eyes. Including sketch color and decorative color. The relationship among color, three primary colors and three elements is: the color range is large, while the latter two are small. Color includes three elements, three factors, hue, contrast and harmony, among which three elements are only a small part. The three primary colors are only a part of the first of the three elements.