Source Crayola® CSS3 CSS4
#393c42
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#73747b
 
#757575
sonic silver
#808080
grey
#808080
grey
#747368
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey