Final answer:
The 'B' in the RGB color model stands for Blue, which is one of the three primary colors used in digital displays to create a vast range of colors.
Step-by-step explanation:
The color that the B in the RGB color model stands for is Blue. The RGB color model is a primary color model used in various devices like monitors, televisions, and cameras. In this model, the colors red, green, and blue are combined in various ways to reproduce a broad array of colors. For example, when the intensity of these three colors is at its highest, the color white is produced. Conversely, when light or color is absent, the result is black. The saturation of a color refers to its intensity, and fully saturated colors are the purest form of color. Blue is one of the three primary colors in the RGB color model and is a cornerstone in the creation of millions of other colors on digital screens.