ΔE 14.8, fair: the same colour family, but not a straight swap. Orange Fire is more muted, warmer than Pyrrole Orange.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Orange Fire is more muted, warmer than Pyrrole Orange.
The same difference applies the other way round: Pyrrole Orange is more saturated, 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 Orange on the colour wheel See Orange Fire on the colour wheel
All matches: Pyrrole Orange equivalents · Orange Fire equivalents