ΔE 10.2, fair: the same colour family, but not a straight swap. Arcane Gold is a little lighter, warmer than Brass Scorpion.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Arcane Gold is a little lighter, warmer than Brass Scorpion.
The same difference applies the other way round: Brass Scorpion is a little darker, 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.
See Brass Scorpion on the colour wheel See Arcane Gold on the colour wheel
All matches: Brass Scorpion equivalents · Arcane Gold equivalents