ΔE 9.3, close: similar, with a visible difference side by side. Ivory is a little lighter, more muted than Decomposed Flesh.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Ivory is a little lighter, more muted than Decomposed Flesh.
The same difference applies the other way round: Decomposed Flesh is a little 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 Decomposed Flesh on the colour wheel See Ivory on the colour wheel
All matches: Decomposed Flesh equivalents · Ivory equivalents