What color is Poster, Alberto Flammer/Flavio Paolucci, Museo Cantonale d'Arte, Lugano, Switzerland ?

Source Crayola® CSS3 CSS4
#bfdef0
 
#c5d0e6
periwinkle
#b0e0e6
powder blue
#b0e0e6
powderblue
#657687
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey