ΔE 6.4, close: similar, with a visible difference side by side. Deep Sky Blue is more saturated than Pearl Light Blue. They are different kinds of paint: Tamiya Pearl Light Blue is a pearl paint and Vallejo Deep Sky Blue is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Deep Sky Blue is more saturated than Pearl Light Blue. They are different kinds of paint.
The same difference applies the other way round: Pearl Light Blue is 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.
See Pearl Light Blue on the colour wheel See Deep Sky Blue on the colour wheel
All matches: Pearl Light Blue equivalents · Deep Sky Blue equivalents