Source Crayola® CSS3 CSS4
#c3cede
 
#c5d0e6
periwinkle
#d3d3d3
light gray
#d3d3d3
lightgrey
#77859a
 
#95918c
gray
#778899
light slate grey
#778899
lightslategrey
#65656d
 
#757575
sonic silver
#696969
dim grey
#696969
dimgrey
#424046
 
#414a4c
outer space
#2f4f4f
dark slate gray
#2f4f4f
darkslategrey