The work aims to improve the error of color image reproduction under different observation conditions and introduce the optimized color appearance model into the color information conversion. On the basis of analyzing the color evaluation on CIECAM02-Jab used for color image reproduction, a new experimental scheme of optimizing the color appearance space was proposed with the OSA-UCS data set. By using the method of linear regression, the lightness and chroma coordinate scale in the original color space was adjusted, and a new uniform color space Jxaxbx was constructed. After the inspection, it was found that the dispersion degree of color difference in the new optimized color appearance space Jxaxbx was reduced, and the space tended to be more uniform and more in line with the uniformity standard. The new optimized color appearance space Jxaxbx has modified the uniformity of the uniform color space and made some improvement compared to the CAM02 initial color appearance space. The color difference evaluation of color image reproduction has achieved certain results.