Well, imagine you have a bunch of crayons. Each crayon has a different color like red, blue, green, yellow, etc. When you draw a picture using these crayons, you have to use different colors to make it look good.
Similarly, when we create pictures on a computer, we also need to use different colors to make it look good. The colors we use are called "color space". One of the color spaces is called "RGB".
RGB stands for Red, Green, and Blue. These are the primary colors we use to create all the other colors we need. Kind of like how blue, yellow, and red are the primary colors of crayons.
So, if we want to create a color on the computer screen, we mix different amounts of red, green, and blue together to make it. For example, if we want yellow, we mix red and green together.
The RGB color space is used in many things like TVs, cameras and computer monitors. It helps make the colors look brighter, more accurate and realistic.
So, RGB is a color space that uses red, green, and blue to create all the other colors we see on our screens. Just like how we use crayons to color our pictures, but on a computer screen!