ΔE 9.2, close: similar, with a visible difference side by side. Transparent Sepia is a little darker, more saturated than Dark DAK Sand. They are different kinds of paint: Army Painter Dark DAK Sand is an opaque base/layer paint and Green Stuff World Transparent Sepia 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 9). Transparent Sepia is a little darker, more saturated than Dark DAK Sand. They are different kinds of paint.
The same difference applies the other way round: Dark DAK Sand 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 Dark DAK Sand on the colour wheel See Transparent Sepia on the colour wheel
All matches: Dark DAK Sand equivalents · Transparent Sepia equivalents