Keystone Light has 4.13 percent alcohol by volume, which is a fairly typical ABV for light beer. One 12-ounce serving includes 104 calories and five grams of carbohydrates.
Coors Brewing Company introduced Keystone Light in 1989. Recognizable by its light blue label, this beer is an American-style light lager with a smooth taste and a clean finish. Several other varieties of Keystone are also available, including Keystone Ice and Keystone Premium, but Keystone Light is the lightest in terms of ABV and calorie content. Coors claims that Keystone canned beers maintain a taste more reminiscent of bottled beer due to the company's specially lined cans.