ΔE 19.5, loose: different enough that you should pick on purpose. Orchid Light is noticeably lighter, much more saturated, cooler than Amulet Purple.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Orchid Light is noticeably lighter, much more saturated, cooler than Amulet Purple.
The same difference applies the other way round: Amulet Purple is noticeably darker, 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 Orchid Light on the colour wheel
All matches: Amulet Purple equivalents · Orchid Light equivalents