Golden Flesh vs Sand Yellow

How close are they?

ΔE 16.4, loose: different enough that you should pick on purpose. Sand Yellow is a little darker, more saturated, cooler than Golden Flesh.

Can I use Sand Yellow instead of Golden Flesh?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Sand Yellow is a little darker, more saturated, cooler than Golden Flesh.

Can I use Golden Flesh instead of Sand Yellow?

The same difference applies the other way round: Golden Flesh is a little lighter, 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.