ΔE 8.3, close: similar, with a visible difference side by side. Charred Brown is a little darker, cooler than Light Leather.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Charred Brown is a little darker, cooler than Light Leather.
The same difference applies the other way round: Light Leather is a little lighter, 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 Light Leather on the colour wheel See Charred Brown on the colour wheel
All matches: Light Leather equivalents · Charred Brown equivalents