Source Crayola® CSS3 CSS4
#777a73
 
#757575
sonic silver
#808080
grey
#808080
grey
#4f4e41
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen
#b3afa7
 
#b0b7c6
cadet blue
#a9a9a9
dark gray
#a9a9a9
darkgrey
#2f2c22
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey