ΔE 2.1, very close: most people won’t see a difference side by side. IJN Ash Grey is cooler than IDF Gray 2 (-1981 Golan).
Yes, for most jobs. Very close match (ΔE 2). IJN Ash Grey is cooler than IDF Gray 2 (-1981 Golan).
The same difference applies the other way round: IDF Gray 2 (-1981 Golan) is 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 Gray 2 (-1981 Golan) on the colour wheel See IJN Ash Grey on the colour wheel
All matches: IDF Gray 2 (-1981 Golan) equivalents · IJN Ash Grey equivalents