Iron Wolf vs N4 Neutral Gray

How close are they?

ΔE 14.1, fair: the same colour family, but not a straight swap. N4 Neutral Gray is a little lighter, more muted than Iron Wolf.

Can I use N4 Neutral Gray instead of Iron Wolf?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). N4 Neutral Gray is a little lighter, more muted than Iron Wolf.

Can I use Iron Wolf instead of N4 Neutral Gray?

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.