HEX RGB NAME HSL
#000000
#FFFFFF rgb(255,255,255) White hsl(360,100%,100%)
#FFFF00 rgb(255,255,0) Yellow hsl(60,100%,50%)
#BFFF00 rgb(191,255,0) Lime Green hsl(75,100%,50%)
#40FF00 rgb(64,255,0) Apple Green hsl(105,100%,50%)
#00FF80 rgb(0,255,128) Emerald hsl(150,100%,50%)
#00FFBF rgb(0,255,191) Light Jade hsl(165,100%,50%)
#00FFFF rgb(0,255,255) Aqua hsl(180,100%,50%)

Alpha channel or Opacity or Transparency