What color is Newsletter, LACE Newsletter- April/May 1988 ?

Source Crayola® CSS3 CSS4
#3a4652
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#5cb7b3
 
#45cea2
shamrock
#66cdaa
medium aquamarine
#66cdaa
mediumaquamarine
#91959a
 
#95918c
gray
#778899
light slate grey
#778899
lightslategrey
#5d6066
 
#4a646c
deep space sparkle
#696969
dim grey
#696969
dimgrey
#c5e1e5
 
#c5d0e6
periwinkle
#b0e0e6
powder blue
#b0e0e6
powderblue