Source Crayola® CSS3 CSS4
#4d4333
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen
#80979b
 
#95918c
gray
#778899
light slate grey
#778899
lightslategrey
#9eb6a9
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#5f7a84
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#292620
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey