The colors present on the extended basic color wheel consists of primaries red, yellow, and blue secondaries creating by two of the primaries, orange, green, violet and intermediaries created by the combination of adjacent primaries and secondary colors. Between yellow and orange, we can combine the two, we get yellow and orange. By combining green and blue, we get a green blue. These new colors combined to fill out the color wheel so we get an even movement around the rainbow of the color wheel. In truth theoretical terms, these are called the intermediate secondaries or intermediaries. They are sometimes referred to as the two sureties but they are not.

In commercial publications on interior design. The term tertiaries refers to the intermediate secondaries. These are the colors on the color wheel between the primaries and secondaries. On the extended basic color wheel, there are six of them. You needed to be aware of the correct terminology and the different ways these colors are described. True tertiaries are created by mixing pairs of secondary.

The combination of green and orange creates all of orange plus violet gives us a reddish brown cold rosette. A combination of violet with green will create a slight or bluish gray. If we combined Olive rosette and slate, the final color that will result is a neutral black or a nothing color. It is really a neutral grace brown devoid of life.