Castellax Bronze vs Battle Axe Brass

How close are they?

ΔE 27.3, loose: different enough that you should pick on purpose. Battle Axe Brass is noticeably lighter, more muted than Castellax Bronze.

Can I use Battle Axe Brass instead of Castellax Bronze?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 27). Battle Axe Brass is noticeably lighter, more muted than Castellax Bronze.

Can I use Castellax Bronze instead of Battle Axe Brass?

The same difference applies the other way round: Castellax Bronze is noticeably darker, 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.