ΔE 8.6, close: similar, with a visible difference side by side. Temple Guard Blue is a little lighter, cooler than Tidal Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Temple Guard Blue is a little lighter, cooler than Tidal Blue.
The same difference applies the other way round: Tidal Blue is a little darker, 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.
See Tidal Blue on the colour wheel See Temple Guard Blue on the colour wheel
All matches: Tidal Blue equivalents · Temple Guard Blue equivalents