Vitamins in Kale. Kale is rich in vitamins A, B-6, C, E and K. Photo Credit Comstock Images/Comstock/Getty Images. Once used primarily as a frilly garnish, kale is gaining recognition as an immunity-boosting, cancer-fighting cruciferous vegetable.Vitamins A, B-6, C, E and K are in kale's list of essential micronutrients.In addition to its vitamin content, kale offers dietary fiber, calcium, iron, manganese and a host of antioxidant phytonutrients. Steamed, boiled or sauteed, kale provides a wealth of vitamins to support your health.itamins in Kale. Kale is rich in vitamins A, B-6, C, E and K. Photo Credit Comstock Images/Comstock/Getty Images. Once used primarily as a frilly garnish, kale is gaining recognition as an immunity-boosting, cancer-fighting cruciferous vegetable.