What color is Drawing, Textile Design: Welle (Wave) ?

Source Crayola® CSS3 CSS4
#4b4743
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#857f78
 
#757575
sonic silver
#808080
grey
#808080
grey
#6b7e9c
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey