Orange (colour) colours on a television or computer screen), orange is generated by combining high intensity red light with a lower intensity green light, with the blue light turned off entirely. Orange is a tertiary colour which is numerically halfway between gamma-compressed red and yellow, as can be seen in the . Regarding painting, blue is the complementary colour to orange. As many painters of the 19th century discovered, blue and orange reinforce each other. The painter Vincent van Gogh wrote to his brother Theo that in his paintings, he was trying to reveal "the oppositions of blue with orange, of red
Academic dress of the University of Nottingham partially or fully lined with light blue silk which is the University colour and trimmed with a ribbon the colour of which indicates the graduate's faculty. All members of the University (from undergraduate to Doctor to Divinity) wear a black square cap except for doctors in full dress for whom the regulations now specify a round black velvet bonnet. Lately, such persons have been observed wearing a cord around the brim of the bonnet though these are not stipulated in the regulations. These cords are claret or scarlet for those with substantive doctorates (depending on the colour of the dress