RGB vs CMYK

• RGB - red, green, blue:

  • Additive colour model
  • For computer displays
  • Uses light to display colour
  • Colours result from transmitted light
  • Red + green + blue = white
• CMYK - cyan, magenta, yellow, black:

  • Subtractive colour model
  • For printed material
  • Uses ink to display colour
  • Colours result from reflected light
  • Cyan + magenta + yellow = black