ΔE 16.7, loose: different enough that you should pick on purpose. Azure is much more saturated, cooler than Amulet Purple.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Azure is much more saturated, cooler than Amulet Purple.
The same difference applies the other way round: Amulet Purple is much 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 Amulet Purple on the colour wheel See Azure on the colour wheel
All matches: Amulet Purple equivalents · Azure equivalents