Bluest blue

So many musical references to blue- Kind of Blue- Miles Davis, Moody Blue- Elvis, Blue- Joni Mitchell, Blue Bayou - Linda Ronstadt- the list goes on and on- there's sea blue and sky blue  and David Bowie's electric blue - visually, these hydrangeas describe blue so perfectly.
https://www.youtube.com/watch?v=Q3L58KyHC_M