ΔE 7.9, close: similar, with a visible difference side by side. Pale Flesh is a little darker, warmer than Heavy Warm White.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Pale Flesh is a little darker, warmer than Heavy Warm White.
The same difference applies the other way round: Heavy Warm White is a little lighter, 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 Heavy Warm White on the colour wheel See Pale Flesh on the colour wheel
All matches: Heavy Warm White equivalents · Pale Flesh equivalents