Orange is the color between yellow and red in the spectrum of visible light. The human eye perceives orange when looking at light with a dominant wavelength between 585 and 620 nanometers. In traditional color theory, it is a secondary color of pigments created by mixing yellow and red. In the RGB color model, it is a tertiary color. It takes its name from the homonymous fruit. The orange color of many fruits and vegetables, such as carrots, squash, sweet potatoes, and oranges, comes from carotene, a type of photosynthetic pigment. These pigments convert the light energy that plants absorb from the sun into chemical energy for plant growth. Similarly, the shades of autumn leaves come from the same pigment after the chlorophyll has been removed. Surveys in Europe and America indicate that orange is the color most associated with fun, bohemian, outgoing, warmth, fire, energy, activity, danger, taste and aroma , to autumn and the seasons of All Saints Day, which has long been the national one . color. Color of the Netherlands and of the orange house. It also serves as the political color of the political ideology of the Christian Democrats and most Christian Democrat political parties. In Asia, it is an important symbolic color in Buddhism and Hinduism.