Sand Yellow vs Imp Yellow

How close are they?

ΔE 13.3, fair: the same colour family, but not a straight swap. Imp Yellow is a little lighter, more muted than Sand Yellow.

Can I use Imp Yellow instead of Sand Yellow?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Imp Yellow is a little lighter, more muted than Sand Yellow.

Can I use Sand Yellow instead of Imp Yellow?

The same difference applies the other way round: Sand Yellow is a little 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.