ΔE 9.9, close: similar, with a visible difference side by side. Krieg Khaki is a little lighter, more muted than Light Mustard Khaki.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Krieg Khaki is a little lighter, more muted than Light Mustard Khaki.
The same difference applies the other way round: Light Mustard Khaki is a little darker, more saturated.
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 Light Mustard Khaki on the colour wheel See Krieg Khaki on the colour wheel
All matches: Light Mustard Khaki equivalents · Krieg Khaki equivalents