Primary Colors
主要颜色
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Almost all visible colors can be obtained by the additive color mixing of three colors that are in widely spaced regions of the visible spectrum. If the three colors of light can be mixed to produce white, they are called primary colors and the standard additive primary colors are red, green and blue.
几乎所有的可见颜色都可以通过三种在可见光谱中广泛分布区域的色光的加色混合来获得。如果三种光色可以混合成白色，它们被称为三基色，标准的加色三基色是红、绿和蓝。
Two colors that produce white when added together are called complementary. The color complementary to a primary color is called a secondary color. The complementary or secondary colors for red, green and blue are cyan, magenta and yellow respectively. These three colors are often referred to as the subtractive primary colors. When the three are combined in subtractive color mixing, they produce black.
当两种颜色相加时能产生白色，这两种颜色被称为互补色。初级色的互补色称为次级色。红色、绿色和蓝色的互补色或次级色分别是青色、品红和黄色。这三种颜色通常被称为减色系的三原色。在减色系色彩混合中，这三种颜色混合在一起会产生黑色。
| Primary colors and color space
三原色与色空间 | RGB primary colors
RGB三基色 | CIE primary colors
CIE 原色 |
Vision concepts
Color vision
Color measurement
Reference
Williamson & Cummins
Ch 2
索引 视觉概念 色觉 色度测量 参考 Williamson & Cummins 第2章
| HyperPhysics***** Light and Vision
HyperPhysics ***** 光与视觉 | R Nave |
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