ΔE 14.5, fair: the same colour family, but not a straight swap. Wagram Blue is a little darker, more saturated than Turnbull Turquoise.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Wagram Blue is a little darker, more saturated than Turnbull Turquoise.
The same difference applies the other way round: Turnbull Turquoise is a little lighter, 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 Turnbull Turquoise on the colour wheel See Wagram Blue on the colour wheel
All matches: Turnbull Turquoise equivalents · Wagram Blue equivalents