ΔE 14.3, fair: the same colour family, but not a straight swap. Red Leather is noticeably lighter, more muted than Clay Brown.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Red Leather is noticeably lighter, more muted than Clay Brown.
The same difference applies the other way round: Clay Brown 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 Clay Brown on the colour wheel See Red Leather on the colour wheel
All matches: Clay Brown equivalents · Red Leather equivalents