Incubi Darkness vs Steely Blue

How close are they?

ΔE 12.4, fair: the same colour family, but not a straight swap. Steely Blue is a little darker, warmer than Incubi Darkness.

Can I use Steely Blue instead of Incubi Darkness?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Steely Blue is a little darker, warmer than Incubi Darkness.

Can I use Incubi Darkness instead of Steely Blue?

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