ΔE 14.4, fair: the same colour family, but not a straight swap. Field Green-Grey is noticeably darker, cooler than Death World Forest.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Field Green-Grey is noticeably darker, cooler than Death World Forest.
The same difference applies the other way round: Death World Forest is noticeably 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 Death World Forest on the colour wheel See Field Green-Grey on the colour wheel
All matches: Death World Forest equivalents · Field Green-Grey equivalents