Yellow Ochre vs Flak Gun Yellow

How close are they?

ΔE 13.8, fair: the same colour family, but not a straight swap. Flak Gun Yellow is noticeably lighter, more saturated than Yellow Ochre.

Can I use Flak Gun Yellow instead of Yellow Ochre?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Flak Gun Yellow is noticeably lighter, more saturated than Yellow Ochre.

Can I use Yellow Ochre instead of Flak Gun Yellow?

The same difference applies the other way round: Yellow Ochre is noticeably 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.