ΔE 12.1, fair: the same colour family, but not a straight swap. Sorcerer's Cloak is more muted, warmer than Cultist Purple.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Sorcerer's Cloak is more muted, warmer than Cultist Purple.
The same difference applies the other way round: Cultist Purple is 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 Cultist Purple on the colour wheel See Sorcerer's Cloak on the colour wheel
All matches: Cultist Purple equivalents · Sorcerer's Cloak equivalents