ΔE 9.7, close: similar, with a visible difference side by side. Green Brown is a little lighter, warmer than USMC Green FS 34095.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Green Brown is a little lighter, warmer than USMC Green FS 34095.
The same difference applies the other way round: USMC Green FS 34095 is a little darker, 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 USMC Green FS 34095 on the colour wheel See Green Brown on the colour wheel
All matches: USMC Green FS 34095 equivalents · Green Brown equivalents