ΔE 6.5, close: similar, with a visible difference side by side. Inktense Red is more saturated than Fiery Vermilion. They are different kinds of paint: Army Painter Fiery Vermilion is an opaque base/layer paint and Scale75 Inktense Red is an ink, glaze or transparent 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). Inktense Red is more saturated than Fiery Vermilion. They are different kinds of paint.
The same difference applies the other way round: Fiery Vermilion is more muted.
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 Fiery Vermilion on the colour wheel See Inktense Red on the colour wheel
All matches: Fiery Vermilion equivalents · Inktense Red equivalents