Warplock Bronze vs Spartan Bronze

How close are they?

ΔE 9.6, close: similar, with a visible difference side by side. Spartan Bronze is more saturated, warmer than Warplock Bronze.

Can I use Spartan Bronze instead of Warplock Bronze?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Spartan Bronze is more saturated, warmer than Warplock Bronze.

Can I use Warplock Bronze instead of Spartan Bronze?

The same difference applies the other way round: Warplock Bronze is more muted, 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.