Raw Sienna vs Red Leather

How close are they?

ΔE 10.9, fair: the same colour family, but not a straight swap. Red Leather is a little lighter, more muted, cooler than Raw Sienna.

Can I use Red Leather instead of Raw Sienna?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Red Leather is a little lighter, more muted, cooler than Raw Sienna.

Can I use Raw Sienna instead of Red Leather?

The same difference applies the other way round: Raw Sienna is a little darker, 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.