ΔE 7.5, close: similar, with a visible difference side by side. Insignia White is a little lighter, cooler than Mojave White.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Insignia White is a little lighter, cooler than Mojave White.
The same difference applies the other way round: Mojave White is a little darker, warmer.
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 Mojave White on the colour wheel See Insignia White on the colour wheel
All matches: Mojave White equivalents · Insignia White equivalents