Flash Gitz Yellow vs Primary Yellow

How close are they?

ΔE 11.5, fair: the same colour family, but not a straight swap. Primary Yellow is a little lighter, more muted than Flash Gitz Yellow.

Can I use Primary Yellow instead of Flash Gitz Yellow?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Primary Yellow is a little lighter, more muted than Flash Gitz Yellow.

Can I use Flash Gitz Yellow instead of Primary Yellow?

The same difference applies the other way round: Flash Gitz Yellow is a little darker, more saturated.

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.