HEX CODES
#C2CBD2
#A8B5BF
#9AA0A4
#6F777D
#F6F6F6
#F2F2F2
#BBBBBB
#9D9D9D
#E4D7CE
#D9C7B9
#AFA7A2
#8D827A
#847466
#4F3825
#746B62
#392B1F
#BE9E85
#A27551
#988475
#6C503A

Original image from Peter Lloyd

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