What color is Mortar ?

Source Crayola® CSS3 CSS4
#3d3a31
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#74726b
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#9a9891
 
#95918c
gray
#a9a9a9
dark gray
#a9a9a9
darkgrey