ΔE 10.5, fair: the same colour family, but not a straight swap. Skullcrusher Brass is a little darker, more muted, warmer than Auric Armour Gold.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Skullcrusher Brass is a little darker, more muted, warmer than Auric Armour Gold.
The same difference applies the other way round: Auric Armour Gold is a little lighter, more saturated, 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 Auric Armour Gold on the colour wheel See Skullcrusher Brass on the colour wheel
All matches: Auric Armour Gold equivalents · Skullcrusher Brass equivalents