What color is yellow?

Yellow is a combination of green and red.

Yellow is a color formed by light with a wavelength between 565 and 590 nanometers. Yellow light can be produced by mixing the three primary colors of red light and green light. It is also one of the three primary colors of pigment. The complementary color of yellow is blue. But traditionally, painters use purple as the complementary color of yellow.

Yellow has eye-catching functions such as attention and reminder. For example, before the green light ends and turns red, traffic lights display yellow lights to remind pedestrians and vehicles. Britain also stipulates that some areas at the front end of all railway vehicles should be painted yellow to warn passers-by, while school buses in Canada and the United States are required to be painted yellow. Some engineering vehicles and machinery are also painted yellow.

The use and symbolic meaning of yellow

After the Song Dynasty in China, bright yellow was the emperor's special color. Yellow is similar to precious metal gold, so it has the meaning of wealth. In China's Five Elements Theory, yellow is a symbol of soil and represents the position of the central government. In Beijing Opera, Facebook represents fierce and cruel characters, such as Dian Wei. In Thailand, yellow is the lucky color on Mondays. In Taiwan Province Province, yellow is the color of CITIC Brothers in China Major League Baseball, and taxis are also painted yellow, nicknamed "Xiao Huang".