ΔE 8.7, close: similar, with a visible difference side by side. Yellow Olive is more muted than Green Morkshroom.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Yellow Olive is more muted than Green Morkshroom.
The same difference applies the other way round: Green Morkshroom is more saturated.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Green Morkshroom on the colour wheel See Yellow Olive on the colour wheel
All matches: Green Morkshroom equivalents · Yellow Olive equivalents