The singer shared this side-profile photo, showing off this vibrant hue.
And of course he had to take a selfie, showing just how much he loves this hair color.
We had no idea Kalin had such a knack for rainbow hair colors and this one looks so cool on him.
We'll be keeping an eye out to see what color he goes for next!
What do you think about Kalin's blue hair? Tell us in the comments what you think in the comments below!