Dark red!
If you mix red, green, and yellow you will get a dark green bogey color!
Yellow-Green
No colors will mix together to make yellow. It is a primary color.
When you mix cadmium red and yellow you will get the sap green color.
Dark red!
red green and blue
It does not matter how much red (a primary colour) and green (a secondary colour) you mix together, you will always get some variation of brown or grey. Yellow is a primary colour, that means you can not mix to get it. You can't do it. Yellow is a primay color which means that you can't mix colors to get yellow. Red is also a primary color and green is the complimentary color of red. When you mix these two colors you will get a strange shade of brown...but no yellow. Sorry.
It can be green or red or yellow. It can sometimes also be a mix of red and yellow, and sometimes the reds vary in brightness. Some are more like a wine color and some are bright red... also can be green.
Yellow
Green is a mixture of blue and yellow, so green and red would make brown.
Red, green and blue are the Primary colors. They mix to make the Secondary colors, like purple (from blue and red) or orange (from red and yellow). Colors that are mixed from two secondary colors are called complementary colors. To get green you would have to mix blue and yellow, which are both primary colors; so green is a secondary color.
Mix the primary colors Blue and Yellow to get Green.