What color is Picture, "Last Supper" after da Vinci ?

Source Crayola® CSS3 CSS4
#beccd5
 
#c5d0e6
periwinkle
#b0c4de
light steel blue
#b0c4de
lightsteelblue
#aba78e
 
#95918c
gray
#a9a9a9
dark gray
#a9a9a9
darkgrey
#98a6b2
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey
#6d7883
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#555c68
 
#4a646c
deep space sparkle
#696969
dim grey
#696969
dimgrey