Source Crayola® CSS3 CSS4
#99a8c5
 
#a2add0
wild blue yonder
#a9a9a9
dark gray
#a9a9a9
darkgrey
#6f7c94
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#c6d1e2
 
#c5d0e6
periwinkle
#d3d3d3
light gray
#d3d3d3
lightgrey