ΔE 10.7, fair: the same colour family, but not a straight swap. Hot Orange is a little lighter, warmer than Pyrrole Red.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Hot Orange is a little lighter, warmer than Pyrrole Red.
The same difference applies the other way round: Pyrrole Red is a little darker, 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.
See Pyrrole Red on the colour wheel See Hot Orange on the colour wheel
All matches: Pyrrole Red equivalents · Hot Orange equivalents