ΔE 11.6, fair: the same colour family, but not a straight swap. Russ. AF Dark Green is a little darker, more saturated than Darkness Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Russ. AF Dark Green is a little darker, more saturated than Darkness Grey.
The same difference applies the other way round: Darkness Grey is a little lighter, more muted.
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 Darkness Grey on the colour wheel See Russ. AF Dark Green on the colour wheel
All matches: Darkness Grey equivalents · Russ. AF Dark Green equivalents