Dark Blue vs Blue Violet

How close are they?

ΔE 14.9, fair: the same colour family, but not a straight swap. Blue Violet is noticeably lighter, more muted than Dark Blue.

Can I use Blue Violet instead of Dark Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Blue Violet is noticeably lighter, more muted than Dark Blue.

Can I use Dark Blue instead of Blue Violet?

The same difference applies the other way round: Dark Blue is noticeably darker, more saturated.

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.