Indigo Blue vs Mystic Blue

How close are they?

ΔE 13.9, fair: the same colour family, but not a straight swap. Mystic Blue is a little lighter, more saturated than Indigo Blue.

Can I use Mystic Blue instead of Indigo Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Mystic Blue is a little lighter, more saturated than Indigo Blue.

Can I use Indigo Blue instead of Mystic Blue?

The same difference applies the other way round: Indigo Blue is a little darker, 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.