• Question: How many different colours are there? (Including combinations)

    Asked by Jeff Acer 42.0 to Claire, Liad, Ruth, Ryan, Mako on 22 Jun 2015.
    • Photo: Ryan Cheale

      Ryan Cheale answered on 22 Jun 2015:

      So for computers we use a system called hexdecimal colours, each colour is identified by #XXXXXX where each pair is a 8bit count of a contribution of red blue or green. So each colour has a max contribution of 255

      so black is #000000 and white is #FFFFFF

      so with 255,255,255 triple parings we get around 16million different shades, there are no doubt more but your eye wouldn’t be able to tell the difference

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