RGB and CMYK are both color models used in various forms of media, but they are used in different ways.
RGB (Red, Green, Blue) is a color model used for displaying images on electronic devices such as televisions and computer monitors. It works by creating colors by mixing different intensities of red, green and blue light.
CMYK (Cyan, Magenta, Yellow and Key/Black) is a color model used for printing with ink, such as on paper or fabric. It works by creating colors by overlapping cyan, magenta and yellow ink, with black added as needed for darker shades.
In general, RGB is used for creating digital images and videos and CMYK is used for printing those images. When you want to print a picture or graphic, it's important to convert it from RGB to CMYK, as the colors may appear differently when printed.