ΔE 8.6, close: similar, with a visible difference side by side. Sulfide Ochre is more saturated, cooler than MERDC Sand (FS30277).
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Sulfide Ochre is more saturated, cooler than MERDC Sand (FS30277).
The same difference applies the other way round: MERDC Sand (FS30277) 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.
See MERDC Sand (FS30277) on the colour wheel See Sulfide Ochre on the colour wheel
All matches: MERDC Sand (FS30277) equivalents · Sulfide Ochre equivalents