What color is Drawing, Study of a Seabed Composition ?

Source Crayola® CSS3 CSS4
#3e3c38
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#e3e0c6
 
#efdecd
almond
#dcdcdc
gainsboro
#dcdcdc
gainsboro
#cebb8c
 
#deaa88
tumbleweed
#d2b48c
tan
#d2b48c
tan
#8c877b
 
#95918c
gray
#808080
grey
#808080
grey
#6f6b61
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey