ΔE 11.4, fair: the same colour family, but not a straight swap. Flash Gitz Yellow is a little darker, more saturated than High Coverage Yellow.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Flash Gitz Yellow is a little darker, more saturated than High Coverage Yellow.
The same difference applies the other way round: High Coverage Yellow is a little lighter, 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 High Coverage Yellow on the colour wheel See Flash Gitz Yellow on the colour wheel
All matches: High Coverage Yellow equivalents · Flash Gitz Yellow equivalents