Sand Grey vs Dark Yellow

How close are they?

ΔE 11.2, fair: the same colour family, but not a straight swap. Dark Yellow is more saturated, cooler than Sand Grey.

Can I use Dark Yellow instead of Sand Grey?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Dark Yellow is more saturated, cooler than Sand Grey.

Can I use Sand Grey instead of Dark Yellow?

The same difference applies the other way round: Sand Grey 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.