Seafarer Blue vs Light Sea Blue

How close are they?

ΔE 6.1, close: similar, with a visible difference side by side. Light Sea Blue is a little lighter, more saturated than Seafarer Blue.

Can I use Light Sea Blue instead of Seafarer Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Light Sea Blue is a little lighter, more saturated than Seafarer Blue.

Can I use Seafarer Blue instead of Light Sea Blue?

The same difference applies the other way round: Seafarer Blue is a little darker, 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.