ΔE 12.9, fair: the same colour family, but not a straight swap. Arcane Gold is a little darker, more saturated, cooler than Shifting Sands.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Arcane Gold is a little darker, more saturated, cooler than Shifting Sands.
The same difference applies the other way round: Shifting Sands is a little lighter, more muted, 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 Shifting Sands on the colour wheel See Arcane Gold on the colour wheel
All matches: Shifting Sands equivalents · Arcane Gold equivalents