Cool Blue Hair Color On Dark Hair Ideas. Blue black hair is a deep and bold decision for ladies who like to play with fascinating and extraordinary colors, experimenting with matching shades. Web dark blue roots under white blonde hair color.

Creating a shade of dark blue requires mixing darker shades of green and violet and painting them on dark hair. This icy blue is opulent with black color from the top. If a bold blue bob hasn’t made it onto your hair bucket list yet, add it immediately.