Iron Warriors vs Honed Steel

How close are they?

ΔE 7.6, close: similar, with a visible difference side by side. Honed Steel is a little lighter, more muted than Iron Warriors.

Can I use Honed Steel instead of Iron Warriors?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Honed Steel is a little lighter, more muted than Iron Warriors.

Can I use Iron Warriors instead of Honed Steel?

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