The research on on the surface color difference of mica iron oxide pigments aims to address the instability of traditional color measurement methods in accurately identifying the colors of pearlescent pigments.This study utilized a CCD sensor color recognition system in conjunction with a flat-top light source to compare different color correction algorithms.Ultimately,the dynamic threshold white balance algorithm model was chosen to achieve precise identification of mica iron oxide colors.By comparing the color recognition performance of spectrophotometers and CCD sensor color recognition systems,the experimental results demonstrated that the CCD sensor color recognition system has significant advantages and notably improves the stability and accuracy of traditional color measurement methods in color difference calculations.