Q : “ Hey Siri ! What are the three primary colours ?” A : “ Red , Yellow , Blue .”
ADDITIVE COLOUR MIXING RGB Model
Right ? Well , not exactly .
We see colour because light enters our eyes in one of two ways : either directly from a light source or reflected off the surface of an object .
So , when talking about colour , you need to specify whether you are talking about light or pigment .
If you are talking about physics and light , your primary colours are red , green , and blue . This is the RGB or additive model .
If you are talking about pigment , you have two options . The printer ’ s primaries are magenta , yellow , and cyan . This is the CMY model . The artist ’ s primaries are red , yellow , and blue . This is the RYB model .
Both the CMY and RYB models are subtractive models .
Additive colours are those which make more light when they are mixed together . With each mix , we add more light - ultimately , the colours add up to white . B + G = C
R + B = M R + G = Y R + G + B = W
Red , green , and blue are additive primaries because they can make all the other colours of light . By mixing two primary colours in equal proportions , secondary colours arise ; in the additive system , these are cyan , magenta , and yellow . Equal amounts of red , green , and blue make white light .
Since additive colours are created by adding coloured light to black , the RGB model is used to create colour for television , computer graphics , and all other digital presentations that project light .