Source Crayola® CSS3 CSS4
#877577
 
#757575
sonic silver
#808080
grey
#808080
grey
#b3bdb8
 
#b0b7c6
cadet blue
#c0c0c0
silver
#c0c0c0
silver
#4c5152
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey