Source Crayola® CSS3 CSS4
#b1c3ca
 
#b0b7c6
cadet blue
#c0c0c0
silver
#c0c0c0
silver
#8ca0aa
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#63737b
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#384b56
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey