ΔE 7.8, close: similar, with a visible difference side by side. Brown Rose is warmer than Undead Skintone.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Brown Rose is warmer than Undead Skintone.
The same difference applies the other way round: Undead Skintone is 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 Undead Skintone on the colour wheel See Brown Rose on the colour wheel
All matches: Undead Skintone equivalents · Brown Rose equivalents