Sanguine Scarlet vs Ferrari Red

How close are they?

ΔE 7.6, close: similar, with a visible difference side by side. Ferrari Red is a little lighter than Sanguine Scarlet.

Can I use Ferrari Red instead of Sanguine Scarlet?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Ferrari Red is a little lighter than Sanguine Scarlet.

Can I use Sanguine Scarlet instead of Ferrari Red?

The same difference applies the other way round: Sanguine Scarlet is a little darker.

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.