ΔE 7.5, close: similar, with a visible difference side by side. Inktense Oxide is a little darker, more saturated than Ruddy Terra. They are different kinds of paint: Army Painter Ruddy Terra is an opaque base/layer paint and Scale75 Inktense Oxide is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Inktense Oxide is a little darker, more saturated than Ruddy Terra. They are different kinds of paint.
The same difference applies the other way round: Ruddy Terra is a little lighter, more muted.
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 Ruddy Terra on the colour wheel See Inktense Oxide on the colour wheel
All matches: Ruddy Terra equivalents · Inktense Oxide equivalents