Source Crayola® CSS3 CSS4
#2e3033
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#616268
 
#6e5160
eggplant
#696969
dim grey
#696969
dimgrey
#6e7a88
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey