Neptune Glow vs Light Blue

How close are they?

ΔE 5.9, very close: most people won’t see a difference side by side. Light Blue is more saturated, cooler than Neptune Glow.

Can I use Light Blue instead of Neptune Glow?

Yes, for most jobs. Very close match (ΔE 6). Light Blue is more saturated, cooler than Neptune Glow.

Can I use Neptune Glow instead of Light Blue?

The same difference applies the other way round: Neptune Glow is 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.