Source Crayola® CSS3 CSS4
#b9b1a6
 
#b0b7c6
cadet blue
#a9a9a9
dark gray
#a9a9a9
darkgrey
#7a736c
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#514e49
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey