Orange (colour) Orange (colour) Orange is the colour between yellow and red on the spectrum of visible light. Human eyes perceive orange when observing light with a dominant wavelength between roughly 585 and 620 nanometres. In painting and traditional colour theory, it is a secondary colour of pigments, created by mixing yellow and red. It is named after the fruit of the same name. The orange colour of carrots, pumpkins, sweet potatoes, oranges, and many other fruits and vegetables comes from carotenes, a type of photosynthetic pigment. These pigments convert the light energy that the plants absorb from the sun into chemical
International Colour Day of the International Colour Association, AIC 2012 held in Taipei, Taiwan. As expressed by designer Hosanna Yau, from Hong Kong, "two circles form an eye, with an equal half of rainbow color and black representing light and darkness, day and night, everyone feast one's eye on the international color day." Some of the activities and events that are unfolded on the International Colour Day: Pakistan International Colour Day An international colour day (ICD) has been considered as appropriate since colour is, thanks to visual perception, one of the most influential phenomena in people’s lives and also one of the channels