Cobalt is a shiny, silvery-blue metal that is used in many things like batteries, magnets, and paint. It's also an important element for humans because our bodies need small amounts of cobalt to stay healthy. Full definition
I really love that shade of cobalt blue in the jacket you're wearing. (everythingjustso.net)
A pair of cobalt blue shoes blends with the print of the skirt, while a pink jacket and an orange handbag complement the entire mix of colors. (creativefashionglee.com)
A large scale, leaf design vinyl wallpaper, shown here in cobalt blue with blue leaf detailing. (wallpaperdirect.com)