The three most classic patterns are (left to right) houndstooth, shepherd's check, and glen plaid:
Shepherd's check is, IMO, the ne plus ultra
of wedding ties, and my favorite.
Black/white/silver/gray is the safest and most iconic color palate. But dark blue can substitute for black and is very elegant.
The one in the center is blue and yellow shepherd's check on a pale silver ground. I like it for spring/summer:
The one on the far left is a light navy with a silver plaid. Second from left is a silver/black Macclesfield. Second from right is a classic shepard's check. Far right is a houndstooth.
Here is a houndstooth with pale blue and dark brown (thank you, AlanC!):
Some more Macclesfields: