What color is Button ?

Source Crayola® CSS3 CSS4
#112e59
 
#1a4876
midnight blue
#191970
midnight blue
#191970
midnightblue
#50657a
 
#4a646c
deep space sparkle
#696969
dim grey
#696969
dimgrey
#6f8293
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey