The RGB color mode is a color standard in the industry, which is obtained by changing the three color channels of red (R), green (G), and blue (B) and superimposing them on each other. RGB is the color of the three channels of red, green and blue. This standard includes almost all colors that human vision can perceive. It is one of the most widely used color systems.

To specify a color on the webpage, use the RGB mode to determine the R10/R/B, which is the intensity of the three primary colors of red/green/blue. Generally, the minimum intensity of each color is 0, the highest is 255, and usually expressed in hexadecimal values, and the three values are listed in parallel, starting with #, then the hexadecimal FF corresponds to 255.

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