The invention discloses a composition expressing 10Y 9 / 9
pigment and a technical method for preparing a color characterization object by using the composition. The composition comprises the following components by weight portion: 995 to 1,005 portions of CSC-C base stock, 11.0 to 11.34 portions of PY138 of which the
pigment content is 27 percent, and 19.5 to 20.0 portions of PW6 of which the
pigment content is 65 percent. The main component of the CSC-C base stock is
acrylic acid polymer of which the content is between 35 and 45 percent; the average molecular weight of the base stock is between 150,000 and 200,000, the
contrast ratio of the base stock is between 0.20 and 0.40, and the Stoke
viscosity of the base stock is between 90 and 100 KU; and when the incidence angle is 85 DEG, the lustrousness of the base stock is between 5 and 10. The color characterization object has good
weather resistance and stability, and good matching
reproduction quality, and raw materials and process used meet the environment-friendly requirement and standard of low VOC and zero VOC; and compared with the standard value of a theoretical model in
national standard of Chinese color
system, the color characterization object has small
color difference, has high accuracy in color realization, and can be widely applied in a plurality of fields related to color.