HEX CODES
#4DBDF1
#00A1EC
#5397B7
#096B99
#4F6173
#001B35
#55606B
#091929
#FCFDFB
#FBFDFA
#BEBEBD
#A2A3A1
#50E5F5
#05DAF2
#55B0BA
#0C8E9D
#50F5F5
#05F2F2
#55BABA
#0C9D9D

Original image from Raka Rachgo

Five colors with tint, shade, and tone of each for added inspiration. Includes HTML/HEX codes.