Cobalt blue has emerged as one of the defining colors of 2026, and it happens to look incredible on nails. An InStyle editor breaks down how the color has been inspiring artists for centuries, and 13 nail ideas that show how chic and powerful cobalt nails can be.
The At Home Classic Manicure
Skip the time-consuming and costly trips to the salon and perfectly polish your nails at home. With the right equipment, your favorite polish color and











