Blue peekaboo hair is one of the most striking and versatile ways to incorporate a vibrant pop of color without committing to a full-head transformation. By placing cool blue tones under the top layer of your hair, the hidden shade remains subtle when worn straight down, but reveals an eye-catching burst of color whenever your hair sways, catches a breeze, or is styled into braids, waves, and updos.

From deep midnight indigo to vibrant electric cobalt and soft pastel icy blue, blue peekaboo highlights contrast beautifully with black, blonde, brown, or silver top layers. Below are 10 creative blue peekaboo hair ideas to inspire your next salon visit.