Battle Axe Brass vs Arcane Gold

How close are they?

ΔE 23.1, loose: different enough that you should pick on purpose. Arcane Gold is noticeably darker, more saturated than Battle Axe Brass.

Can I use Arcane Gold instead of Battle Axe Brass?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Arcane Gold is noticeably darker, more saturated than Battle Axe Brass.

Can I use Battle Axe Brass instead of Arcane Gold?

The same difference applies the other way round: Battle Axe Brass is noticeably lighter, more muted.

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.