ΔE 10.5, fair: the same colour family, but not a straight swap. Nurgling Green is a little darker, cooler than Light Soviet Khaki.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Nurgling Green is a little darker, cooler than Light Soviet Khaki.
The same difference applies the other way round: Light Soviet Khaki is a little lighter, 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 Light Soviet Khaki on the colour wheel See Nurgling Green on the colour wheel
All matches: Light Soviet Khaki equivalents · Nurgling Green equivalents