ΔE 14.1, fair: the same colour family, but not a straight swap. Wolf Grey is noticeably darker, more muted, cooler than Runic Cobalt.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Wolf Grey is noticeably darker, more muted, cooler than Runic Cobalt.
The same difference applies the other way round: Runic Cobalt is noticeably lighter, more saturated, warmer.
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 Runic Cobalt on the colour wheel See Wolf Grey on the colour wheel
All matches: Runic Cobalt equivalents · Wolf Grey equivalents