Source Crayola® CSS3 CSS4
#6879c3
 
#5d76cb
indigo
#6a5acd
slate blue
#6a5acd
slateblue
#4a5eb8
 
#324ab2
violet blue
#4682b4
steel blue
#4682b4
steelblue
#9098be
 
#979aaa
manatee
#a9a9a9
dark gray
#a9a9a9
darkgrey