Dark Red vs Vampire Red

How close are they?

ΔE 14.7, fair: the same colour family, but not a straight swap. Vampire Red is a little lighter, cooler than Dark Red.

Can I use Vampire Red instead of Dark Red?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Vampire Red is a little lighter, cooler than Dark Red.

Can I use Dark Red instead of Vampire Red?

The same difference applies the other way round: Dark Red is a little darker, 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.