For the sake of conversation what about occasion, seasonality, texture and materials?
Midnight navy Grenadine - Spring
Midnight navy Macclesfield - Autumn
Midnight navy cashmere - Winter
Midnight navy shantung - Summer
Midnight navy knit - Business casual
Grey & black glenplaid - Weddings
A black knit is a really good Swiss Army knife of a tie. It's just about suitable for any occasion that demands a tie. Rarely ideal but if you could only had one tie you'd struggle to...