What color is Scenic Panel, Les Vues de Suisse ?

Source Crayola® CSS3 CSS4
#9aa7a5
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#bddbd5
 
#c5d0e6
periwinkle
#b0e0e6
powder blue
#b0e0e6
powderblue
#666b63
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#758989
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#41504c
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey