1、专业 英语 24. Colour 颜色是如何形成的？ 颜色是物质的？还是精神的？Light and Colour The colours of the colour wheel are the building blocks of most colour combinations (1.72). The traditional primary colours red, yellow,blue cannot be mixed from any other two colours. The secondary colours are colours, such as orange (a blend
2、 of red and yellow) and green (a blend of yellow and blue), which can be mixed from two primary colours. In the colour wheel the secondary colours are located between the primary colours because they naturally fall between them in the visible spectrum. Colours of light and colours of pigment behave
3、differently. 色光与色料的差异Dimensions of Colour All colours have three basic properties: hue, value, and saturation. By manipulating these three properties painters can achieve an endless range of visual effects. 色相，明度与纯度Hue 色相 Hues are the basic colours of the spectrum, the same as those in a rainbow: re
4、d, orange, yellow, green, blue, and violet. In addition, there are a number of other hues we can see when white light is divided into the spectrum, for example blue-green or yellow-orange. 加纳 可可种植 丧葬礼俗 色彩Value 明度 Each hue has a value, meaning its relative lightness or darkness compared to another hu
5、e. For example, a pure yellow has a light value and a pure blue has a dark value. Similarly, different colours of the same hue vary in terms of their value: there are light reds and dark redsSaturation 纯度（饱和度）When we think of the colour yellow, we often imagine something strong, bright and intense.
6、Many shades of yellow exist, but we tend to associate a colour with its purest state, or its highest level of saturation. Saturation describes the purity of a hue as it is derived from pure white light.纽曼 (Barnett Newman, 1905-1970) 有小树的弯路 科利尤尔的灯塔（1905）查林十字桥（1906） 伦敦池 （ 1906）海港景与白马 1905年 Colour Sche
7、mesThe colour wheel displays important colour relationships. It is a kind of colour map that allows us to assess quickly the attributes of colours as they relate to each other. Colours opposite each other on the colour wheel are called complementary colours.Complementary colours contrast strongly with each other. Colours adjacent to each other on the colour wheel are called analogous colours. These colours do not contrast strongly with each other. Complementary Colour萨金特 萨瑟兰公爵夫人米莉森特像 1904Van_Gogh_VincentGauguins_chair凡高 星月夜 1889 现实世界与非现实世界之间的紧张感凡高 有乌鸦的麦田 1890Analogous Colour 邻近色
