ΔE 15.5, loose: different enough that you should pick on purpose. Dark Green 2 is a little darker, more muted, cooler than Nurgling Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Dark Green 2 is a little darker, more muted, cooler than Nurgling Green.
The same difference applies the other way round: Nurgling Green is a little lighter, more saturated, 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 Nurgling Green on the colour wheel See Dark Green 2 on the colour wheel
All matches: Nurgling Green equivalents · Dark Green 2 equivalents