RGB, which stands for Red, Green, and Blue, is a color model essential in the world of digital illustrations and children's book design. By mixing these three colors in various combinations and intensities, a wide spectrum of colors can be created. In children's books, illustrations often utilize the RGB color model for vibrant, eye-catching imagery displayed on screens, be it in e-books or digital marketing. Understanding RGB is crucial for artists and designers aiming to produce appealing visual content that captures children's attention.