ΔE 10.6, fair: the same colour family, but not a straight swap. Pale Violet Red is a little lighter, cooler than Murder Scene. They are different kinds of paint: Army Painter Murder Scene is a one-coat contrast-style paint and Reaper Pale Violet Red is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Pale Violet Red is a little lighter, cooler than Murder Scene. They are different kinds of paint.
The same difference applies the other way round: Murder Scene is a little darker, 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 Murder Scene on the colour wheel See Pale Violet Red on the colour wheel
All matches: Murder Scene equivalents · Pale Violet Red equivalents