Don't have a pair of black jeans yet? It might be time to try some. On days when you feel like something different or a little less casual, a pair of black denim makes for a cool, contemporary alternative to your faded and washed denim or workaday chinos. Look for slimmer, tapered styles with little to no embellishments. It's a sleek, minimalist style that's still relaxed enough to wear with your go-to tees, denim shirts or hoodies. They're more versatile than you might think. Herewith, six smart buys in a range of prices.