You would get a yellow-green.
blue
yellow and blue
Yellow and black can make an olive green.
Green
Yellow and blue make green. Add more yellow to get a yellow-green. These colors will be intense, so you may have to lighten with white.
Depending on how dark the green was, the yellow would make the green lighter or it would be absorbed by the dark green as if you didn't mix anything into it. The darker a colour is the harder it is to lighten.
red green and yellow makes a dark green bogey colour
A vey light yellow green or slightly murky yellow.
green
Green
Green
yellow and blue
Yellow and black can make an olive green.
Olive Green
Yellow and blue.
chartreuse
yellow
GREEN