ΔE 8.5, close: similar, with a visible difference side by side. Sail Color is a little lighter, cooler than Light Mustard Khaki.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Sail Color is a little lighter, cooler than Light Mustard Khaki.
The same difference applies the other way round: Light Mustard Khaki 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 Light Mustard Khaki on the colour wheel See Sail Color on the colour wheel
All matches: Light Mustard Khaki equivalents · Sail Color equivalents