RGB colour values

RGB colour values are expressed as decimal triplets or hexadecimal triplets and are used in software applications to select specific colours colour.

  • RGB colour values (codes) are represented by decimal triplets (base 10) or hexadecimal triplets (base 16).
  • In decimal notation, an RGB triplet is used to represent the values of red, then green, then blue. A range of decimal numbers from 0 to 255 can be selected for each value.
    • Red = 255, 00, 00
    • Yellow = 255, 255, 0
    • Green = 00, 255, 00
    • Cyan = 00, 255, 255
    • Blue = 00, 00, 255
    • Magenta = 255, 00, 255
  • In hexadecimal notation an RGB triplet is used to represent the value of red, then green, then blue. A range of  hexadecimal numbers from 00 to FF can be selected for each value.
  • The hash symbol (#) is used to indicate hex notation.
    • Red = #FF0000
    • Yellow = #FFFF00
    • Green = #00FF00
    • Cyan = #00FFFF
    • Blue = #0000FF
    • Magenta = #FF00FF
  • The sequence of hexadecimal values between 1 and 16 = 0,1,2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F.
  • The sequence of hexadecimal values between 17 and 32 = 10,11,12,13,14,15,16,17,18,19,1A,1B,1C,1D,1E and 1F.