ΔE 9.1, close: similar, with a visible difference side by side. Desert Yellow is a little lighter than Brown Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Desert Yellow is a little lighter than Brown Green.
The same difference applies the other way round: Brown Green is a little darker.
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 Brown Green on the colour wheel See Desert Yellow on the colour wheel
All matches: Brown Green equivalents · Desert Yellow equivalents