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