Red Fluor vs Fluorescent Red

How close are they?

ΔE 14.1, fair: the same colour family, but not a straight swap. Fluorescent Red is a little lighter, more muted than Red Fluor.

Can I use Fluorescent Red instead of Red Fluor?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Fluorescent Red is a little lighter, more muted than Red Fluor.

Can I use Red Fluor instead of Fluorescent Red?

The same difference applies the other way round: Red Fluor 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.