ΔE 9.7, close: similar, with a visible difference side by side. Ancient Stone is a little darker, more muted, warmer than Cremeweiss.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Ancient Stone is a little darker, more muted, warmer than Cremeweiss.
The same difference applies the other way round: Cremeweiss 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 Cremeweiss on the colour wheel See Ancient Stone on the colour wheel
All matches: Cremeweiss equivalents · Ancient Stone equivalents