French Greyish Blue vs Iron Wolf

How close are they?

ΔE 8.7, close: similar, with a visible difference side by side. Iron Wolf is a little lighter, more saturated than French Greyish Blue.

Can I use Iron Wolf instead of French Greyish Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Iron Wolf is a little lighter, more saturated than French Greyish Blue.

Can I use French Greyish Blue instead of Iron Wolf?

The same difference applies the other way round: French Greyish Blue is a little darker, more muted.

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.