ΔE 10.6, fair: the same colour family, but not a straight swap. Chromium Oxide Green is cooler than Drab Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Chromium Oxide Green is cooler than Drab Green.
The same difference applies the other way round: Drab Green is 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 Drab Green on the colour wheel See Chromium Oxide Green on the colour wheel
All matches: Drab Green equivalents · Chromium Oxide Green equivalents