ΔE 10.0, fair: the same colour family, but not a straight swap. Khaki Highlight is a little lighter, more saturated, cooler than Worn Stone.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Khaki Highlight is a little lighter, more saturated, cooler than Worn Stone.
The same difference applies the other way round: Worn Stone is a little darker, more muted, 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 Worn Stone on the colour wheel See Khaki Highlight on the colour wheel
All matches: Worn Stone equivalents · Khaki Highlight equivalents