The primary colors are the foundation of the color wheel. They cannot be created, no matter how many different color combinations you try. They are red, blue, and yellow.
Secondary colors are those you get when mixing two of the primary colors. Red and yellow make orange. Yellow and blue make green. Blue and red make purple.
Complimentary colors are those opposite one another on the color wheel. Red & Green, Purple & Yellow, and Blue & Orange are all complimentary color combinations that "compliment" one another.
Warm Vs. Cool Colors
The basic warm colors are red, yellow, and orange. The basic cool colors are blue, purple and green. Neutral colors are black, brown, white, and grey. HERE you will find a video tutorial for a cool project to explore these color combinations.