ΔE 13.0, fair: the same colour family, but not a straight swap. Medium Gray is a little lighter, more saturated than Anthracite Gray.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Medium Gray is a little lighter, more saturated than Anthracite Gray.
The same difference applies the other way round: Anthracite Gray is a little darker, 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 Anthracite Gray on the colour wheel See Medium Gray on the colour wheel
All matches: Anthracite Gray equivalents · Medium Gray equivalents