Weapon Bronze vs Arcane Gold

How close are they?

ΔE 15.3, loose: different enough that you should pick on purpose. Arcane Gold is a little lighter, much more muted, cooler than Weapon Bronze.

Can I use Arcane Gold instead of Weapon Bronze?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Arcane Gold is a little lighter, much more muted, cooler than Weapon Bronze.

Can I use Weapon Bronze instead of Arcane Gold?

The same difference applies the other way round: Weapon Bronze is a little darker, much more saturated, warmer.

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.