The GB/T 18721.4-2024 standard specifies the format and requirements for wide-gamut standard color image data for display in pre-press data exchange in printing technology. Based on the Adobe RGB (1998) color space, the standard defines the technical specifications and data structures for standard color image data (SCID) in wide color gamut. It aims to ensure accurate reproduction and consistent transmission of colors between display devices and printing devices. The standard is applicable to image data processing and transmission scenarios in the printing industry. It provides a unified reference for high-mass color management between devices and promotes the standardized application of printing technology in color display and data exchange.