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Green is the color between blue and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495–570 nm. In subtractive color systems, used in painting and color printing, it is created by a combination of yellow and blue, or yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue, which are mixed in different combinations to create all other colors. By far the largest contributor to green in nature is chlorophyll, the chemical by which plants photosynthesize and convert sunlight into chemical energy. Many creatures have adapted to their green environments by taking on a green hue themselves as camouflage. Several minerals have a green color, including the emerald, which is colored green by its chromium content.
During post-classical and early modern Europe, green was the color commonly associated with wealth, merchants, bankers and the gentry, while red was reserved for the nobility. For this reason, the costume of the Mona Lisa by Leonardo da Vinci and the benches in the British House of Commons are green while those in the House of Lords are red.
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Haarlem (Dutch pronunciation: [ˈɦaːrlɛm] (listen); predecessor of Harlem in the English language) is a city and municipality in the Netherlands. It is the capital of the province of North Holland and is situated at the northern edge of the Randstad, one of the most populated metropolitan areas in Europe, and is also part of the Amsterdam metropolitan area. Haarlem had a population of 161,265 in 2019.
Haarlem was granted city status or stadsrechten in 1245, although the first city walls were not built until 1270.