ΔE 3.4, very close: most people won’t see a difference side by side. Amber Skin is cooler than Matt Sepia. They are different kinds of paint: AMMO by Mig Matt Sepia is an ink, glaze or transparent paint and Army Painter Amber Skin is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Yes, for most jobs. Very close match (ΔE 3). Amber Skin is cooler than Matt Sepia. They are different kinds of paint.
The same difference applies the other way round: Matt Sepia 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 Sepia on the colour wheel See Amber Skin on the colour wheel
All matches: Matt Sepia equivalents · Amber Skin equivalents