Castellax Bronze vs Chestnut Gold

How close are they?

ΔE 9.3, close: similar, with a visible difference side by side. Chestnut Gold is a little darker, more muted than Castellax Bronze.

Can I use Chestnut Gold instead of Castellax Bronze?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Chestnut Gold is a little darker, more muted than Castellax Bronze.

Can I use Castellax Bronze instead of Chestnut Gold?

The same difference applies the other way round: Castellax Bronze is a little lighter, 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.