ΔE 10.5, fair: the same colour family, but not a straight swap. Morrow Purple is a little darker, more muted, cooler than Magos Purple.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Morrow Purple is a little darker, more muted, cooler than Magos Purple.
The same difference applies the other way round: Magos Purple is a little 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 Magos Purple on the colour wheel See Morrow Purple on the colour wheel
All matches: Magos Purple equivalents · Morrow Purple equivalents