What color is Textile (possibly USA) ?

Source Crayola® CSS3 CSS4
#3c455e
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey
#556378
 
#4a646c
deep space sparkle
#696969
dim grey
#696969
dimgrey
#727a83
 
#757575
sonic silver
#708090
slate gray
#708090
slategrey