Warped Yellow vs Banana Split

How close are they?

ΔE 15.0, loose: different enough that you should pick on purpose. Banana Split is more saturated, cooler than Warped Yellow.

Can I use Banana Split instead of Warped Yellow?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Banana Split is more saturated, cooler than Warped Yellow.

Can I use Warped Yellow instead of Banana Split?

The same difference applies the other way round: Warped 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.