HEX CODES
#F550C9
#F205B3
#BA559F
#9D0C76
#CB4FFA
#B400F8
#A155BD
#7709A0
#F5F5F5
#F2F2F2
#BABABA
#9D9D9D
#F5BB50
#F29F05
#BA9655
#9D6A0C
#83D9FD
#4EC9FD
#74A8BE
#3883A3

Original image from Quinten de Graaf

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