The ISO 17972-4 standard specifies Part 4 of the Color Data Interchange Format (CxF/X) in graphic technology, Spot Color Characterization Data (CxF/X-4). The standard provides a standardized data format for the characterization of spot colors (e.g. Pantone colors, etc.) in digitalization environments, ensuring seamless exchange of color data between different devices and applications. By defining the color characteristics and numerical representation of spot colors, the CxF/X-4 format supports color conformity and accuracy in color management systems and is widely used in the printing, Encasement and design industries. The standard helps to improve color reproducibility and ensure the conformity of spot colors in different printing equipment and production processes.