ΔE 21.2, loose: different enough that you should pick on purpose. Dragon Blood is a little darker, much more saturated than Dusk Red.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Dragon Blood is a little darker, much more saturated than Dusk Red.
The same difference applies the other way round: Dusk Red is a little lighter, much more muted.
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 Dusk Red on the colour wheel See Dragon Blood on the colour wheel
All matches: Dusk Red equivalents · Dragon Blood equivalents