Iron Wolf vs Slate Grey

How close are they?

ΔE 11.5, fair: the same colour family, but not a straight swap. Slate Grey is a little lighter, more muted than Iron Wolf.

Can I use Slate Grey instead of Iron Wolf?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Slate Grey is a little lighter, more muted than Iron Wolf.

Can I use Iron Wolf instead of Slate Grey?

The same difference applies the other way round: Iron Wolf 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.