ΔE 8.2, close: similar, with a visible difference side by side. Sepia Vetus is cooler than Zandri Dust. They are different kinds of paint: Citadel Zandri Dust is an opaque base/layer paint and Green Stuff World Sepia Vetus 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). Sepia Vetus is cooler than Zandri Dust. They are different kinds of paint.
The same difference applies the other way round: Zandri Dust is 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 Zandri Dust on the colour wheel See Sepia Vetus on the colour wheel
All matches: Zandri Dust equivalents · Sepia Vetus equivalents