ΔE 11.6, fair: the same colour family, but not a straight swap. Orange Brown is a little lighter, more saturated than Warm Brown.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Orange Brown is a little lighter, more saturated than Warm Brown.
The same difference applies the other way round: Warm Brown is a little darker, 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 Warm Brown on the colour wheel See Orange Brown on the colour wheel
All matches: Warm Brown equivalents · Orange Brown equivalents