Light Mustard Khaki vs Stained Ivory

How close are they?

ΔE 7.1, close: similar, with a visible difference side by side. Stained Ivory is warmer than Light Mustard Khaki.

Can I use Stained Ivory instead of Light Mustard Khaki?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Stained Ivory is warmer than Light Mustard Khaki.

Can I use Light Mustard Khaki instead of Stained Ivory?

The same difference applies the other way round: Light Mustard Khaki is 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.