ΔE 6.7, close: similar, with a visible difference side by side. Mid Battle Dress is a little darker than IDF Sand Grey 1970s-1980s.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Mid Battle Dress is a little darker than IDF Sand Grey 1970s-1980s.
The same difference applies the other way round: IDF Sand Grey 1970s-1980s is a little lighter.
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 Battle Dress on the colour wheel
All matches: IDF Sand Grey 1970s-1980s equivalents · Mid Battle Dress equivalents