ΔE 11.8, fair: the same colour family, but not a straight swap. IJA Light Grey Green is more saturated, cooler than Beige Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). IJA Light Grey Green is more saturated, cooler than Beige Grey.
The same difference applies the other way round: Beige Grey is 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 Beige Grey on the colour wheel See IJA Light Grey Green on the colour wheel
All matches: Beige Grey equivalents · IJA Light Grey Green equivalents