ΔE 10.1, fair: the same colour family, but not a straight swap. Fire Orange is cooler than Fuegan Orange. They are different kinds of paint: Citadel Fuegan Orange is a wash/shade and Reaper Fire Orange is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Fire Orange is cooler than Fuegan Orange. They are different kinds of paint.
The same difference applies the other way round: Fuegan Orange is warmer.
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 Fuegan Orange on the colour wheel See Fire Orange on the colour wheel
All matches: Fuegan Orange equivalents · Fire Orange equivalents