The ASTM E 2539-14 (2021) standard specifies a multi-angle Color Measuring method for interference pigments. Interference pigments exhibit different Color effects at different viewing angles due to their special Optical inspection properties. The standard uses multi-angle Color measurement to help accurately evaluate the Color change of interference pigments under different lighting and viewing angles. This is essential for the design, production and quality control of Coatings, inks and Miscellaneous products containing interference pigments, especially in applications where Color conformity and Appearance effects are required. Through the implementation of this standard, the color characteristics of pigments can be accurately quantified, providing a scientific basis for the application of interference pigments.