Three elements of color are hue, light and shade, and chromas. Any color can be made by mixing three primary colors: red, green, and blue. If only the same amount of red, green, and blue is mixed, the color becomes gray scale from black to white.
It is possible to have a color chart consisting of various color made by changing in hue and brightness. The horizontal direction shows the change in hue and the vertical direction shows the change in light and shade.
The color that is made by mixing three basic erements of color red, green and blue is changing as ratio of mixing amount of the tree colors is changing.