Source Crayola® CSS3 CSS4
#564d47
 
#414a4c
outer space
#556b2f
dark olive green
#556b2f
darkolivegreen
#716d65
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#a5a29c
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey