ΔE 16.3, loose: different enough that you should pick on purpose. Arcane Gold is a little lighter, much more muted, cooler than Golden Armour.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Arcane Gold is a little lighter, much more muted, cooler than Golden Armour.
The same difference applies the other way round: Golden Armour 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.
See Golden Armour on the colour wheel See Arcane Gold on the colour wheel
All matches: Golden Armour equivalents · Arcane Gold equivalents