Dark Ivory vs Flanker Light Blue

How close are they?

ΔE 13.8, fair: the same colour family, but not a straight swap. Flanker Light Blue is a little darker, more saturated than Dark Ivory.

Can I use Flanker Light Blue instead of Dark Ivory?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Flanker Light Blue is a little darker, more saturated than Dark Ivory.

Can I use Dark Ivory instead of Flanker Light Blue?

The same difference applies the other way round: Dark Ivory is a little lighter, 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.