ΔE 6.9, close: similar, with a visible difference side by side. Karak Stone is more saturated, warmer than Decomposed Flesh.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Karak Stone is more saturated, warmer than Decomposed Flesh.
The same difference applies the other way round: Decomposed Flesh is 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.
See Decomposed Flesh on the colour wheel See Karak Stone on the colour wheel
All matches: Decomposed Flesh equivalents · Karak Stone equivalents