ΔE 10.2, fair: the same colour family, but not a straight swap. Skink Blue is a little lighter, more muted than Troglodyte Blue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Skink Blue is a little lighter, more muted than Troglodyte Blue.
The same difference applies the other way round: Troglodyte Blue is a little darker, more saturated.
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 Troglodyte Blue on the colour wheel See Skink Blue on the colour wheel
All matches: Troglodyte Blue equivalents · Skink Blue equivalents