ΔE 13.2, fair: the same colour family, but not a straight swap. Teclis Blue is noticeably lighter, more saturated than Power Blue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Teclis Blue is noticeably lighter, more saturated than Power Blue.
The same difference applies the other way round: Power Blue is noticeably 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.
See Power Blue on the colour wheel See Teclis Blue on the colour wheel
All matches: Power Blue equivalents · Teclis Blue equivalents