ΔE 17.0, loose: different enough that you should pick on purpose. Luftwaffe Green is a little darker, much more muted, warmer than Caliban Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Luftwaffe Green is a little darker, much more muted, warmer than Caliban Green.
The same difference applies the other way round: Caliban Green is a little lighter, much more saturated, cooler.
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 Caliban Green on the colour wheel See Luftwaffe Green on the colour wheel
All matches: Caliban Green equivalents · Luftwaffe Green equivalents