ΔE 11.7, fair: the same colour family, but not a straight swap. Ink Yellow is a little darker, warmer than Averland Sunset. They are different kinds of paint: Citadel Averland Sunset is an opaque base/layer paint and Vallejo Ink Yellow is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Ink Yellow is a little darker, warmer than Averland Sunset. They are different kinds of paint.
The same difference applies the other way round: Averland Sunset is a little lighter, cooler.
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 Averland Sunset on the colour wheel See Ink Yellow on the colour wheel
All matches: Averland Sunset equivalents · Ink Yellow equivalents