ΔE 10.1, fair: the same colour family, but not a straight swap. IDF Sand Grey is a little darker, more saturated, warmer than Gray Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). IDF Sand Grey is a little darker, more saturated, warmer than Gray Green.
The same difference applies the other way round: Gray Green is a little lighter, more muted, 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 Gray Green on the colour wheel See IDF Sand Grey on the colour wheel
All matches: Gray Green equivalents · IDF Sand Grey equivalents