Sand Yellow vs Averland Sunset

How close are they?

ΔE 17.2, loose: different enough that you should pick on purpose. Averland Sunset is a little darker, much more saturated, warmer than Sand Yellow.

Can I use Averland Sunset instead of Sand Yellow?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Averland Sunset is a little darker, much more saturated, warmer than Sand Yellow.

Can I use Sand Yellow instead of Averland Sunset?

The same difference applies the other way round: Sand Yellow is a little lighter, much more muted, cooler.

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.