ΔE 10.4, fair: the same colour family, but not a straight swap. Sterling Silver is a little darker, more muted than Black Metal.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Sterling Silver is a little darker, more muted than Black Metal.
The same difference applies the other way round: Black Metal is a little lighter, more saturated.
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 Black Metal on the colour wheel See Sterling Silver on the colour wheel
All matches: Black Metal equivalents · Sterling Silver equivalents