ΔE 6.1, close: similar, with a visible difference side by side. Skeleton Horde is a little lighter than Dunkelgelb DG I. They are different kinds of paint: AMMO by Mig Dunkelgelb DG I is an opaque base/layer paint and Citadel Skeleton Horde is a one-coat contrast-style 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 6). Skeleton Horde is a little lighter than Dunkelgelb DG I. They are different kinds of paint.
The same difference applies the other way round: Dunkelgelb DG I is a little darker.
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 Dunkelgelb DG I on the colour wheel See Skeleton Horde on the colour wheel
All matches: Dunkelgelb DG I equivalents · Skeleton Horde equivalents