What color is Sample Book, Rigato ?

Source Crayola® CSS3 CSS4
#b1a7be
 
#b0b7c6
cadet blue
#a9a9a9
dark gray
#a9a9a9
darkgrey
#858ca5
 
#979aaa
manatee
#778899
light slate grey
#778899
lightslategrey
#a6b6cf
 
#a2add0
wild blue yonder
#b0c4de
light steel blue
#b0c4de
lightsteelblue
#cfcee5
 
#c5d0e6
periwinkle
#d3d3d3
light gray
#d3d3d3
lightgrey
#66758b
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey