Blues and purples are considered to represent royalty and spirituality.
Periwinkle, twilight, lapis lazuli, violet. Blue has a calming power and too much blue may be depressing ("the blues"). I read once that blue is the most popular "favorite color", which doesn't surprise me, nature provides it to us abundantly in countless shades of sky and water...and flowers.
Thanks for visiting today and have a beautiful refreshing weekend!
PS Blue quotes taken from Susan Sargent "The Comfort of Color".