ΔE 23.3, loose: different enough that you should pick on purpose. Scarlet Blood is a little lighter, more saturated, warmer than Mindcrime Magenta.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Scarlet Blood is a little lighter, more saturated, warmer than Mindcrime Magenta.
The same difference applies the other way round: Mindcrime Magenta is a little darker, 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 Mindcrime Magenta on the colour wheel See Scarlet Blood on the colour wheel
All matches: Mindcrime Magenta equivalents · Scarlet Blood equivalents