ΔE 10.8, fair: the same colour family, but not a straight swap. Light Rust is a little lighter, more muted than Oxide Brown Light.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Light Rust is a little lighter, more muted than Oxide Brown Light.
The same difference applies the other way round: Oxide Brown Light is a little darker, more saturated.
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 Light Rust on the colour wheel
All matches: Oxide Brown Light equivalents · Light Rust equivalents