ΔE 12.1, fair: the same colour family, but not a straight swap. Light Umber is a little darker, more muted, cooler than Rawhide Brown.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Light Umber is a little darker, more muted, cooler than Rawhide Brown.
The same difference applies the other way round: Rawhide Brown is a little lighter, more saturated, 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 Rawhide Brown on the colour wheel See Light Umber on the colour wheel
All matches: Rawhide Brown equivalents · Light Umber equivalents