The Charcoal color represents the state of coal just before combustion. After burning, another colour becomes, but the coal remains.
#F3F7F8
#E0EAED
#C5D6DC
#9CB9C4
#6C93A4
#517889
#466474
#3D5361
#36454F
#323E47
#1E272E
#5A5A5A
#E3DAC9
#2F4F4F
#B0E0E6
#FFE4B5
#D2B48C
#8FBC8F
#3CB371
#FFEFD5
#EEE8AA
#F5FFFA
#708090
#778899
#E6E6FA
#2C3E50
#8E44AD
#9B59B6
#F4D03F
#FAD7A0
#ECF0F1
#AAB7B8