ΔE 21.8, loose: different enough that you should pick on purpose. Dark Magenta is a little lighter, much more muted, cooler than Evil Sunz Scarlet.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Dark Magenta is a little lighter, much more muted, cooler than Evil Sunz Scarlet.
The same difference applies the other way round: Evil Sunz Scarlet is a little darker, much 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 Evil Sunz Scarlet on the colour wheel See Dark Magenta on the colour wheel
All matches: Evil Sunz Scarlet equivalents · Dark Magenta equivalents