ΔE 6.2, close: similar, with a visible difference side by side. Mid Mustard Khaki is warmer than Grey Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Mid Mustard Khaki is warmer than Grey Green.
The same difference applies the other way round: Grey Green is cooler.
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 Grey Green on the colour wheel See Mid Mustard Khaki on the colour wheel
All matches: Grey Green equivalents · Mid Mustard Khaki equivalents