1. A color reproduction analyzing apparatus comprising a hardware processor configured to: extract a specific area on which an error is supposed to occur as an error factor area when image data for forming an image on paper and read image data generated by reading the image on the paper are received and compared; obtain pixel values of a desired color in a position corresponding to said image data for image forming and said read image data, exclude said error factor area, and compare the pixel values of said image data for image forming and said read image data to analyze a color reproduction; and search for a pixel of a primary color in a color used by an image forming unit at the position corresponding to said image data for image forming and said read image data and obtain a combination of a pixel value of a color of a complementary color of said primary color and a pixel value of said primary color in said pixel that is searched for.