Broadsword Silver vs Anthrax Metal

How close are they?

ΔE 8.0, close: similar, with a visible difference side by side. Anthrax Metal is a little lighter than Broadsword Silver.

Can I use Anthrax Metal instead of Broadsword Silver?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Anthrax Metal is a little lighter than Broadsword Silver.

Can I use Broadsword Silver instead of Anthrax Metal?

The same difference applies the other way round: Broadsword Silver is a little darker.

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.