ΔE 7.4, close: similar, with a visible difference side by side. Purple Shadow is a little lighter, warmer than Dragon Blood.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Purple Shadow is a little lighter, warmer than Dragon Blood.
The same difference applies the other way round: Dragon Blood is a little darker, 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 Dragon Blood on the colour wheel See Purple Shadow on the colour wheel
All matches: Dragon Blood equivalents · Purple Shadow equivalents