ΔE 12.0, fair: the same colour family, but not a straight swap. Fire Red is a little darker, cooler than Oxide Brown Light.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Fire Red is a little darker, cooler than Oxide Brown Light.
The same difference applies the other way round: Oxide Brown Light is a little lighter, 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 Oxide Brown Light on the colour wheel See Fire Red on the colour wheel
All matches: Oxide Brown Light equivalents · Fire Red equivalents