What color is Sample, Checker ?

Source Crayola® CSS3 CSS4
#5a8f75
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey
#576396
 
#58427c
cyber grape
#708090
slate gray
#708090
slategrey
#42676f
 
#4a646c
deep space sparkle
#696969
dim grey
#696969
dimgrey
#3a466f
 
#1a4876
midnight blue
#483d8b
dark slate blue
#483d8b
darkslateblue
#697a8e
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey