ΔE 13.4, fair: the same colour family, but not a straight swap. Orange Magma is a little lighter, warmer than Ochre.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Orange Magma is a little lighter, warmer than Ochre.
The same difference applies the other way round: Ochre is a little darker, 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.
See Ochre on the colour wheel See Orange Magma on the colour wheel
All matches: Ochre equivalents · Orange Magma equivalents