ΔE 8.4, close: similar, with a visible difference side by side. Light Mustard Khaki is more muted, warmer than Light Olive Green. They are different kinds of paint: AMMO by Mig Light Olive Green is an ink, glaze or transparent paint and Army Painter Light Mustard Khaki is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Light Mustard Khaki is more muted, warmer than Light Olive Green. They are different kinds of paint.
The same difference applies the other way round: Light Olive Green is 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 Light Olive Green on the colour wheel See Light Mustard Khaki on the colour wheel
All matches: Light Olive Green equivalents · Light Mustard Khaki equivalents