ΔE 10.3, fair: the same colour family, but not a straight swap. Dark Yellow is a little lighter, more saturated than Gengis Khaki.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Dark Yellow is a little lighter, more saturated than Gengis Khaki.
The same difference applies the other way round: Gengis Khaki is a little darker, more muted.
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 Gengis Khaki on the colour wheel See Dark Yellow on the colour wheel
All matches: Gengis Khaki equivalents · Dark Yellow equivalents