Who knows how some colors are expressed in hexadecimal?

0xff00ff stands for red ff, green ff 00 blue FF The computer uses the three primary colors of light to represent all colors, namely red, green and blue. Each color ranges from 0 to 255( 16 is 0 to FF), where 0 indicates that the color does not exist and ff indicates the strongest value of the color. By adjusting the contrast of these three colors, any other color can be obtained. For example, yellow is the strongest red, the strongest green and the strongest blue. If there is no such value, it is 0xffff00.