ΔE 7.9, close: similar, with a visible difference side by side. Yellow Brown is more saturated than IDF Gray 2 (-1981 Golan).
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Yellow Brown is more saturated than IDF Gray 2 (-1981 Golan).
The same difference applies the other way round: IDF Gray 2 (-1981 Golan) is more muted.
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 IDF Gray 2 (-1981 Golan) on the colour wheel See Yellow Brown on the colour wheel
All matches: IDF Gray 2 (-1981 Golan) equivalents · Yellow Brown equivalents