ΔE 10.2, fair: the same colour family, but not a straight swap. Fluorescent Orange is more saturated than Fire Dragon Bright. They are different kinds of paint: Citadel Fire Dragon Bright is an opaque base/layer paint and Golden Fluorescent Orange is a fluorescent or effect 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). Fluorescent Orange is more saturated than Fire Dragon Bright. They are different kinds of paint.
The same difference applies the other way round: Fire Dragon Bright is more muted.
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 Fire Dragon Bright on the colour wheel See Fluorescent Orange on the colour wheel
All matches: Fire Dragon Bright equivalents · Fluorescent Orange equivalents