Dark Burgundy vs Nocturnal Red

How close are they?

ΔE 8.3, close: similar, with a visible difference side by side. Nocturnal Red is more saturated, warmer than Dark Burgundy.

Can I use Nocturnal Red instead of Dark Burgundy?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Nocturnal Red is more saturated, warmer than Dark Burgundy.

Can I use Dark Burgundy instead of Nocturnal Red?

The same difference applies the other way round: Dark Burgundy is 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.