Yankee Candles are crap. Cheap, wax based product that smell like a gas station bathroom. They don't burn cleanly and don't last long. You will end up repainting your ceiling if you use them often.
Spend a little more and buy a nice soy based candle like Voluspa. Sure, it costs more but the scents are clean and luxurious.
BLACK COCONNUT is one of Yankee's new spring 2013 fragrances, and is described as "sunset in paradise... rich coconut, cedarwood and island blossoms promise an evening of luxurious tranquility". There's not much more that I can add to that - the woody notes tone down the traditionally sunny feeling of the coconut, making it seem 'darker'. I'm not sure what floral notes are used, but there is a powdery undertone to the coconut and woods.
As with all Yankee candles, the entirety of the wax is perfumed; I've used some candles where the fragrance burns up before the candle does, but that is not the case here. The fragrance lasts as long as the candle does and is strong enough to travel over the house. I even catch occasional wafts of the perfume whilst the candle is unlit. I've found that the tarts and tea lights throw off a stronger scent than the candles, so I think that they are the better buys.