Fiery Vermilion vs Primaris Red

How close are they?

ΔE 10.4, fair: the same colour family, but not a straight swap. Primaris Red is a little lighter, more muted than Fiery Vermilion.

Can I use Primaris Red instead of Fiery Vermilion?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Primaris Red is a little lighter, more muted than Fiery Vermilion.

Can I use Fiery Vermilion instead of Primaris Red?

The same difference applies the other way round: Fiery Vermilion is a little darker, 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.