ΔE 13.2, fair: the same colour family, but not a straight swap. Green Beret is a little lighter, more saturated, warmer than Dark DAK Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Green Beret is a little lighter, more saturated, warmer than Dark DAK Green.
The same difference applies the other way round: Dark DAK Green is a little darker, more muted, 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 Dark DAK Green on the colour wheel See Green Beret on the colour wheel
All matches: Dark DAK Green equivalents · Green Beret equivalents