Ochre Desert vs Yellow RLM04

How close are they?

ΔE 11.0, fair: the same colour family, but not a straight swap. Yellow RLM04 is a little lighter than Ochre Desert.

Can I use Yellow RLM04 instead of Ochre Desert?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Yellow RLM04 is a little lighter than Ochre Desert.

Can I use Ochre Desert instead of Yellow RLM04?

The same difference applies the other way round: Ochre Desert is a little darker.

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.