Ruddy Umber vs Orange Oxide

How close are they?

ΔE 12.3, fair: the same colour family, but not a straight swap. Orange Oxide is a little darker, more saturated, warmer than Ruddy Umber.

Can I use Orange Oxide instead of Ruddy Umber?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Orange Oxide is a little darker, more saturated, warmer than Ruddy Umber.

Can I use Ruddy Umber instead of Orange Oxide?

The same difference applies the other way round: Ruddy Umber is a little lighter, more muted, cooler.

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.