What color is Sketchbook Folio, Quick Study of Waves and Large Dark Rock ?

Source Crayola® CSS3 CSS4
#d0c2b5
 
#cdc5c2
silver
#c0c0c0
silver
#c0c0c0
silver
#7f756e
 
#757575
sonic silver
#808080
grey
#808080
grey
#a79c93
 
#95918c
gray
#bc8f8f
rosy brown
#bc8f8f
rosybrown
#4c4644
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey