ΔE 13.3, fair: the same colour family, but not a straight swap. Banana Split is more saturated, cooler than Phalanx Yellow.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Banana Split is more saturated, cooler than Phalanx Yellow.
The same difference applies the other way round: Phalanx Yellow is more muted, warmer.
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 Phalanx Yellow on the colour wheel See Banana Split on the colour wheel
All matches: Phalanx Yellow equivalents · Banana Split equivalents