ΔE 12.2, fair: the same colour family, but not a straight swap. Gunmetal Blue is a little darker, more saturated than Dark Net.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Gunmetal Blue is a little darker, more saturated than Dark Net.
The same difference applies the other way round: Dark Net 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 Dark Net on the colour wheel See Gunmetal Blue on the colour wheel
All matches: Dark Net equivalents · Gunmetal Blue equivalents