ΔE 9.1, close: similar, with a visible difference side by side. Cursed Blue is a little darker, more muted than Voidshield Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Cursed Blue is a little darker, more muted than Voidshield Blue.
The same difference applies the other way round: Voidshield Blue is a little lighter, more saturated.
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 Voidshield Blue on the colour wheel See Cursed Blue on the colour wheel
All matches: Voidshield Blue equivalents · Cursed Blue equivalents