Bright Blue vs Sky Blue

How close are they?

ΔE 14.8, fair: the same colour family, but not a straight swap. Sky Blue is much more muted, warmer than Bright Blue.

✓ AMMO ATOM user guide chart lists these two as equivalents.

Can I use Sky Blue instead of Bright Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Sky Blue is much more muted, warmer than Bright Blue.

Can I use Bright Blue instead of Sky Blue?

The same difference applies the other way round: Bright Blue is much more saturated, 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.