ΔE 7.3, close: similar, with a visible difference side by side. Mid Soviet Khaki is a little darker, more saturated, cooler than IDF Sand Grey 1970s-1980s.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Mid Soviet Khaki is a little darker, more saturated, cooler than IDF Sand Grey 1970s-1980s.
The same difference applies the other way round: IDF Sand Grey 1970s-1980s is a little lighter, more muted, warmer.
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 Sand Grey 1970s-1980s on the colour wheel See Mid Soviet Khaki on the colour wheel
All matches: IDF Sand Grey 1970s-1980s equivalents · Mid Soviet Khaki equivalents