ΔE 12.8, fair: the same colour family, but not a straight swap. Wolven Grey is a little lighter, more muted than Fenrisian Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Wolven Grey is a little lighter, more muted than Fenrisian Grey.
The same difference applies the other way round: Fenrisian Grey is a little 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 Fenrisian Grey on the colour wheel See Wolven Grey on the colour wheel
All matches: Fenrisian Grey equivalents · Wolven Grey equivalents