ΔE 10.7, fair: the same colour family, but not a straight swap. Ivory is a little darker, more muted, warmer than Hammerfall Khaki.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Ivory is a little darker, more muted, warmer than Hammerfall Khaki.
The same difference applies the other way round: Hammerfall Khaki is a little lighter, more saturated, 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.
See Hammerfall Khaki on the colour wheel See Ivory on the colour wheel
All matches: Hammerfall Khaki equivalents · Ivory equivalents