What color does yellow and green make? The color yellow-green is considered a tertiary color, says Color Matters. Yellow is a primary color and green is a secondary color. To further examine the relationship of these colors, make sure to stay tuned… The color wheel is typically comprised of three main groups, namely the primary, secondary, and tertiary colors. Your teacher might have even taught you the color wheel and the colors that sit side by side. Tertiary color… Mix the colors yellow + blue = green. Mix the colors red + blue = violet 3. Here is a simple diagram that displays what happens when you mix the primary colors: red, yellow and blue.As you can see from this chart, when you mix the two colors adjacent to each other you get a new color. In this case, yellow is the primary color and green, which is created by mixing blue and yellow, is the secondary color. Tertiary colors are created by mixing a primary and secondary color together. The more yellow you add the yellower it will get, and the more green you add the greener it will get. When you mix yellow and green together, you technically get the color called yellow-green. When you were a child, you were introduced to the basics of color theory. Mix the colors red + yellow = orange(Side note: I’m not sure why they taught us the color purple versus violet. The three secondary colors are green, orange, and violet; they are each a mixture of two primary colors. Everything I’ve found online reference… Meanwhile, violet, orange, and green are those included in the secondary group. The three primary colors are red, yellow, and blue; they are the only colors that cannot be made by mixing two other colors.. 2. Red, blue, and yellow comprise the primary color subgroup. The Color Wheel: The Color Wheel shows the relationships between the colors. 1.