ΔE 10.4, fair: the same colour family, but not a straight swap. Perylene Violet is more saturated, warmer than Chaotic Red.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Perylene Violet is more saturated, warmer than Chaotic Red.
The same difference applies the other way round: Chaotic Red is more muted, cooler.
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 Chaotic Red on the colour wheel See Perylene Violet on the colour wheel
All matches: Chaotic Red equivalents · Perylene Violet equivalents