Source Crayola® CSS3 CSS4
#242d38
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#9eb7b4
 
#b0b7c6
cadet blue
#a9a9a9
dark gray
#a9a9a9
darkgrey
#d4ebe3
 
#dbd7d2
timberwolf
#dcdcdc
gainsboro
#dcdcdc
gainsboro
#668189
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey