Periwinkle is a member of the blue, violet, and blue family. There is also a flower of the same name. If it weren't for those flowers, we'd be hard at finding names for colors.
#F4F8FA
#E5ECF4
#D2DFEB
#B2CBDE
#8EB0CC
#7C9EC3
#6081B0
#5470A1
#495D84
#3E4D6A
#293142
#7c9ec3
#f3ffe1
#f18dcb
#13293d
#803954
#000000
#d3ab34
#fbfefb
#e26d5c
#e57361
#a2a987
#593825
#9e424e
#7c9ec3 (Dusky Blue)
#89a7c9 (Mid Blue)
#96b1cf (Light Blue)
#a3bbd5 (Lighter Blue)
#b0c4db (Very Light Blue)
#bdcee1 (Even Lighter Blue)
#cad8e7 (Light Fog Gray)
#d7e1ed (Very Light Fog Gray)
#e4ebf3 (Even Lighter Fog Gray)
#f1f5f9 (Lighter than White)
#ffffff (White)
#c37c9e
#9ec37c
#4c77a6 (Dusky Blue)
#5984b3 (Mid Blue)
#6b91bb (Lighter Blue)
#7c9ec3 (Light Blue)
#8dabcb (Very Light Blue)
#9fb8d3 (Even Lighter Blue)
#b0c5db (Light Fog Gray)
#7e7cc3
#7cc2c3
#c3a17c (Light Salmon Pink - Almost Tetrad)
Related: blue gradients, blue colors