What color is Drawing, Study for "Spring in the Countryside" ?

Source Crayola® CSS3 CSS4
#423f36
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#979a60
 
#87a96b
asparagus
#808080
grey
#808080
grey
#c5d3d6
 
#c5d0e6
periwinkle
#d3d3d3
light gray
#d3d3d3
lightgrey
#715538
 
#714b23
raw umber
#556b2f
dark olive green
#556b2f
darkolivegreen