BJCP 18C
Strongly resembles a Strong Golden Ale but slightly darker and somewhat fuller-bodied. Usually has a more rounded malt flavor but should not be sweet.
High in alcohol but does not taste strongly of alcohol. The best examples are sneaky, not obvious. High carbonation and attenuation helps to bring out the many flavors and to increase the perception of a dry finish. Most Trappist versions have at least 30 IBUs and are very dry. Traditionally bottle-conditioned ("refermented in the bottle").
Westmalle Tripel, La Rulles Tripel, St. Bernardus Tripel, Chimay Cinq Cents (White), Watou Tripel, Val-Dieu Triple, Affligem Tripel, Grimbergen Tripel, La Trappe Tripel, Witkap Pater Tripel, Corsendonk Abbey Pale Ale, St. Feuillien Tripel, Bink Tripel, Tripel Karmeliet, New Belgium Trippel, Unibroue La Fin du Monde, Dragonmead Final Absolution, Allagash Tripel Reserve, Victory Golden Monkey
You can view the complete style details on the BJCP website. The 2008 style guide is obsolete but there is a similar 2015 style that you can view below...
OG: 1.075-1.085
FG: 1.008-1.014
IBU: 20-40
SRM: 4.5-7.0
ABV: 7.5-9.5%