ΔE 14.7, fair: the same colour family, but not a straight swap. Shadow Violet is noticeably darker, more muted, cooler than Phoenician Purple.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Shadow Violet is noticeably darker, more muted, cooler than Phoenician Purple.
The same difference applies the other way round: Phoenician Purple is noticeably lighter, more saturated, 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 Phoenician Purple on the colour wheel See Shadow Violet on the colour wheel
All matches: Phoenician Purple equivalents · Shadow Violet equivalents