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