RGB(a)

  • Red, Green, Blue.
  • color: rgb(R, G, B)
  • red: rgb(255, 0, 0)
  • green: rgb(0, 255, 0)
  • blue: rgb(0, 0, 255)

Grey Scale (Black / White)

when all values for R, G and B are the same, we move across a greyscale where 0 is black and 255 is white!

/* black */ 
rgb(0,0,0)

/* dark grey */ 
rgb(20,20,20)

/* light grey */ 
rgb(220,220,220)

/* white */ 
rgb(255,255,255)

Alpha-Channel (Opacity)

  • Syntax: color: rgba(R,G,B,a)
  • transparent when a=0
  • no opacity when a=1 (default when using rgb)