ΔE 9.1, close: similar, with a visible difference side by side. Ruddy Leather is a little lighter, cooler than Wyldwood. They are different kinds of paint: Citadel Wyldwood is a one-coat contrast-style paint and Reaper Ruddy Leather is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Ruddy Leather is a little lighter, cooler than Wyldwood. They are different kinds of paint.
The same difference applies the other way round: Wyldwood is a little darker, 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 Wyldwood on the colour wheel See Ruddy Leather on the colour wheel
All matches: Wyldwood equivalents · Ruddy Leather equivalents