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

颜色的加法原色为红、绿、蓝色,减法的原色则们的补色,即:青、品红黄色,染料的原色。

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原色意义,并详细论述活性染料及分散染料原色的合成筛选原则。