Abstract: The paper introduces the related color theory of colored spun yarn, and discusses the design and quality control of related products. The focus is to elaborate on the techniques and methods of related color theory used in product color design, as well as special processes for controlling the color quality of evenly distributed color and unevenly distributed color products such as color mixing, sampling, pre-carding, preclearing,etc.

Key words: color theory; color design; quality control methods