ΔE 15.0, fair: the same colour family, but not a straight swap. Celestial Violet is noticeably lighter, more muted, cooler than Toxic Purple.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Celestial Violet is noticeably lighter, more muted, cooler than Toxic Purple.
The same difference applies the other way round: Toxic Purple is noticeably darker, 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 Toxic Purple on the colour wheel See Celestial Violet on the colour wheel
All matches: Toxic Purple equivalents · Celestial Violet equivalents