Iron Warriors vs Necro Gold

How close are they?

ΔE 9.9, close: similar, with a visible difference side by side. Necro Gold is more saturated than Iron Warriors.

Can I use Necro Gold instead of Iron Warriors?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Necro Gold is more saturated than Iron Warriors.

Can I use Iron Warriors instead of Necro Gold?

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