ΔE 9.5, close: similar, with a visible difference side by side. Cement Grey is a little darker, more muted, warmer than Pale Olive.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Cement Grey is a little darker, more muted, warmer than Pale Olive.
The same difference applies the other way round: Pale Olive is a little lighter, more saturated, 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 Pale Olive on the colour wheel See Cement Grey on the colour wheel
All matches: Pale Olive equivalents · Cement Grey equivalents