ΔE 9.6, close: similar, with a visible difference side by side. Maggot Skin is a little darker, more muted than Matt Light Yellow. They are different kinds of paint: AMMO by Mig Matt Light Yellow is an ink, glaze or transparent paint and Army Painter Maggot Skin 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 10). Maggot Skin is a little darker, more muted than Matt Light Yellow. They are different kinds of paint.
The same difference applies the other way round: Matt Light Yellow is a little lighter, more saturated.
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 Yellow on the colour wheel See Maggot Skin on the colour wheel
All matches: Matt Light Yellow equivalents · Maggot Skin equivalents