Incubi Darkness vs Turquoise (Phthalo)

How close are they?

ΔE 12.8, fair: the same colour family, but not a straight swap. Turquoise (Phthalo) is warmer than Incubi Darkness. They are different kinds of paint: Citadel Incubi Darkness is an opaque base/layer paint and Golden Turquoise (Phthalo) is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.

Can I use Turquoise (Phthalo) instead of Incubi Darkness?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Turquoise (Phthalo) is warmer than Incubi Darkness. They are different kinds of paint.

Can I use Incubi Darkness instead of Turquoise (Phthalo)?

The same difference applies the other way round: Incubi Darkness is 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.