ΔE 8.9, close: similar, with a visible difference side by side. Kislev Flesh is a little lighter, more muted, cooler than Matt Dwarf Flesh. They are different kinds of paint: AMMO by Mig Matt Dwarf Flesh is an ink, glaze or transparent paint and Citadel Kislev Flesh is an opaque base/layer 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). Kislev Flesh is a little lighter, more muted, cooler than Matt Dwarf Flesh. They are different kinds of paint.
The same difference applies the other way round: Matt Dwarf Flesh is a little darker, more saturated, 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 Dwarf Flesh on the colour wheel See Kislev Flesh on the colour wheel
All matches: Matt Dwarf Flesh equivalents · Kislev Flesh equivalents