ΔE 9.3, close: similar, with a visible difference side by side. Magenta is a little darker, more muted than Blood Thorn.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Magenta is a little darker, more muted than Blood Thorn.
The same difference applies the other way round: Blood Thorn is a little lighter, more saturated.
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 Blood Thorn on the colour wheel See Magenta on the colour wheel
All matches: Blood Thorn equivalents · Magenta equivalents