Source Crayola® CSS3 CSS4
#dfdbcc
 
#dbd7d2
timberwolf
#d3d3d3
light gray
#d3d3d3
lightgrey
#2b2a28
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#617187
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey