1, orange is the warmest color in the warm color system, and white is the wild color. With white, it not only shows youthful vitality, but also shows skin color.

2. Orange belongs to the middle and low frequency part of visible light in electromagnetic wave, with the frequency of 490~5 10THz, and the corresponding wavelength in air is about 6 10~590nm, which is an intermediate color between red and yellow, also called orange or orange.