Source Crayola® CSS3 CSS4
#b6b9c0
 
#b0b7c6
cadet blue
#c0c0c0
silver
#c0c0c0
silver
#686a77
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#6c7f7f
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#383935
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey