Pastel Indigo vs Blue Glacier

How close are they?

ΔE 13.5, fair: the same colour family, but not a straight swap. Blue Glacier is a little darker, more saturated, cooler than Pastel Indigo.

Can I use Blue Glacier instead of Pastel Indigo?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Blue Glacier is a little darker, more saturated, cooler than Pastel Indigo.

Can I use Pastel Indigo instead of Blue Glacier?

The same difference applies the other way round: Pastel Indigo is a little lighter, more muted, 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.