Three-region method of color matching for fluorescent whitening agents

Since fluorescent whitening agent(FWA) has unique optical properties,its color matching for fabrics is difficult.The researchers developed the color matching method of FWA through analyzing its reflectance curve and utilizing a computation formula of the reflectance of fluorescent dyes in the emission region and put forward the three-region (emission,absorption and unaffected) method of color matching.It was proved by dyeing experiments of 20 samples of mixed colors and relative computation that this color matching method is suitable for FWA.The operation is simple and convenient and the maximum color difference is 3.94 CIELAB1976 units.