Yellow Dune vs Naples Yellow Hue

How close are they?

ΔE 15.9, loose: different enough that you should pick on purpose. Naples Yellow Hue is noticeably lighter, more muted than Yellow Dune.

Can I use Naples Yellow Hue instead of Yellow Dune?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Naples Yellow Hue is noticeably lighter, more muted than Yellow Dune.

Can I use Yellow Dune instead of Naples Yellow Hue?

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