Source Crayola® CSS3 CSS4
#66563a
 
#714b23
raw umber
#556b2f
dark olive green
#556b2f
darkolivegreen
#362918
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#9e9991
 
#95918c
gray
#a9a9a9
dark gray
#a9a9a9
darkgrey