ΔE 7.3, close: similar, with a visible difference side by side. Skeleton Horde is cooler than Matt Light Clay. They are different kinds of paint: AMMO by Mig Matt Light Clay is an ink, glaze or transparent 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 7). Skeleton Horde is cooler than Matt Light Clay. They are different kinds of paint.
The same difference applies the other way round: Matt Light Clay 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 Matt Light Clay on the colour wheel See Skeleton Horde on the colour wheel
All matches: Matt Light Clay equivalents · Skeleton Horde equivalents