ΔE 75.7, loose: different enough that you should pick on purpose. Demon Blood is noticeably darker, more saturated, warmer than Fluor Turquoise.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 76). Demon Blood is noticeably darker, more saturated, warmer than Fluor Turquoise.
The same difference applies the other way round: Fluor Turquoise is noticeably lighter, 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 Fluor Turquoise on the colour wheel See Demon Blood on the colour wheel
All matches: Fluor Turquoise equivalents · Demon Blood equivalents