Old Gold vs Skullcrusher Brass

How close are they?

ΔE 8.9, close: similar, with a visible difference side by side. Skullcrusher Brass is a little darker, warmer than Old Gold.

Can I use Skullcrusher Brass instead of Old Gold?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Skullcrusher Brass is a little darker, warmer than Old Gold.

Can I use Old Gold instead of Skullcrusher Brass?

The same difference applies the other way round: Old Gold is a little lighter, cooler.

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.