Before you start mixing colors, you need to understand that color has two different natures: the tangible colors, which are the surface of objects, and the others, which are produced by light, such as the beams of TV. These types create two-color models by which the color wheel is formed: additive and subtractive. The additive color model considers red, blue, and green as primary colors so it’s also known as the RGB color system. This model is the basis of all colors used on the screen. The combination of primary colors in equal proportions of this system produces secondary colors, which are cyan, magenta and yellow, but you need to remember that the more light you add, the brighter and lighter the color becomes. Results obtained by mixing additive colors are often counterintuitive for people accustomed to the subtractive color system of paints, dyes, inks, and other tangible objects. The subtractive color model obtains colors by the subtraction of light. It consists of two color systems. The first is RYB (red, yellow, blue) also known as the artistic system often used in art education, especially in painting. RYB was the basis for the modern scientific color theory which determined that cyan, magenta, and yellow are the most effective set of three colors to combine. This is how the color model CMYK has been formed. It was mostly used in printing and when the photomechanical printing included black ink, the key component, the system was named CMYK (cyan, magenta, yellow, and black). Without this additional pigment, the shade closest to black would be muddy brown. What is Color models?