ΔE 13.8, fair: the same colour family, but not a straight swap. Amethyst Purple is a little darker, more saturated, warmer than Sugar Rush.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Amethyst Purple is a little darker, more saturated, warmer than Sugar Rush.
The same difference applies the other way round: Sugar Rush is a little lighter, more muted, 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 Sugar Rush on the colour wheel See Amethyst Purple on the colour wheel
All matches: Sugar Rush equivalents · Amethyst Purple equivalents