16 Gorgeous Blue Hair-Color Ideas, From Pastel to Navy

It seems as if our newsfeeds are constantly blessed with new hair-color ideas, and most of the time, it's a celebrity or influencer serving up the stellar looks. Whether it was the rose gold hair trend, the invention of "bronde", or using the entire rainbow as inspiration, celebrities (and their stylists) were at the forefront of many major trends we've seen over time. Now, we're seeing blue hair everywhere, and we've rounded up a list of 16 celebrities and influencers that have made us want to go blue. From icy, to seafoam, to cobalt, and anywhere in between, see our list of 16 blue hair ideas courtesy of our favorite mane muses.