What color is Poster, Leonard Bernstein's Mass, 1973 ?

Source Crayola® CSS3 CSS4
#2d2d53
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#b4bae7
 
#c5d0e6
periwinkle
#b0c4de
light steel blue
#b0c4de
lightsteelblue
#545270
 
#58427c
cyber grape
#696969
dim grey
#696969
dimgrey
#838196
 
#95918c
gray
#778899
light slate grey
#778899
lightslategrey