Chromaticity: it is the color of red, yellow and green, that is, the primary color, which is the basic color of all colors.
Brightness: A color that indicates the brightness of a color, such as light pink, bright red and light yellow green. Dark colors, such as light gray, purple, olive and brown.
Chroma: It is the brightness of colors, such as black, white and red. It can also be divided into bright warm colors and cool colors.