ΔE 13.8, fair: the same colour family, but not a straight swap. Orange Brown is noticeably lighter, more muted than Burnt Sienna.
✓ Herrick Games paint comparison chart lists these two as equivalents.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Orange Brown is noticeably lighter, more muted than Burnt Sienna.
The same difference applies the other way round: Burnt Sienna is noticeably 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 Burnt Sienna on the colour wheel See Orange Brown on the colour wheel
All matches: Burnt Sienna equivalents · Orange Brown equivalents