Simply put, RGB is a method of color expression using light on screens, while CMYK is suitable for printing. These two methods differ, and it's important to use them according to their purposes. When ordering sticker printing, always create data in CMYK. RGB stands for Red, Green, and Blue, the primary colors of light. RGB is suitable for expressing colors on screens and is used for computer monitors, displays, and smartphones. On the other hand, CMYK stands for Cyan, Magenta, Yellow, and Key Plate (Black), the primary colors used in four-color printing. CMYK represents the four inks used in printing processes, and various colors are expressed by overlaying these inks. For more details, refer to the following article. RGB Cannot Be Used for Printing | Create Data in CMYK for Sticker Printing