There are only 3 Primary Colors. Red, Yellow, and Blue. Mixing equal parts of any two primary colors results in the creation of a secondary color. If the two primary colors are not in equal amounts, it results in what is called a tertiary color.
For Example:
Equal parts of Yellow and Blue make Green. Green is a secondary color.
Equal parts of Yellow and Red make Orange. Orange is a secondary color.
Equal parts of Red and Blue make Purple. Purple is a secondary color.
Mixing non-equal parts of any two primary colors will result in a tertiary color. For example, a Bluish Green or a Yellowish Green; a reddish purple or a bluish purple; a reddish orange or a yellowy orange.
Each color on the color wheel has an opposite or complementary color. Red is the compliment of Green. Yellow is the compliment of Purple. Blue is the complement of Orange.
This is all in theory. In reality, depending on the pigments in the paint colors, you may not be using a true blue, or true yellow, so your colors may give you something that you might not expect; a brownish green for example instead of a bright emerald green.
Mixing all 3 Primary Colors should make black, but in reality, makes a brown because of the pigments used. White added to any color changes the value of the color.
Hope this helps. I teach this sort of thing when I start working with new students in acrylic painting, watercolor painting, and even in colored pencil drawing. Understanding color theory is often really important to excel as an artist. Hope this helps and I'm happy to help you on your artistic journey.
Best,
Eddie