ΔE 11.7, fair: the same colour family, but not a straight swap. Krieg Khaki is a little darker, more muted than Putrid Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Krieg Khaki is a little darker, more muted than Putrid Green.
The same difference applies the other way round: Putrid Green is a little lighter, more saturated.
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 Putrid Green on the colour wheel See Krieg Khaki on the colour wheel
All matches: Putrid Green equivalents · Krieg Khaki equivalents