ΔE 8.9, close: similar, with a visible difference side by side. Ink Yellow is cooler than Fire Dragon Bright. They are different kinds of paint: Citadel Fire Dragon Bright 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.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Ink Yellow is cooler than Fire Dragon Bright. They are different kinds of paint.
The same difference applies the other way round: Fire Dragon Bright 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 Fire Dragon Bright on the colour wheel See Ink Yellow on the colour wheel
All matches: Fire Dragon Bright equivalents · Ink Yellow equivalents