Additive mixture ofcolortrichroism is red,green and blue,subtractive mixture,as its complementary colors,is cyan,ma genta and yellow,thatis the dyestuff trichroism.

颜色加法混和三原色为、、色,减法混和三原色则是们补色,即:青、品和黄色,三原色是后者。

Based on the colorimetry mechanism,the meaning oftrichroism is studied,as well as the synthetic and selecting principles of trichroism ofreactive and disperse dyes in particular.

本文从色度学原理说明三原色意义,并详细论述活性及分散三原色合成和筛选原则。