Using The RGB Colour Model
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This diagram explores the RGB colour model. It looks at how wavelengths of light corresponding with the RGB primary colours are combined to produce secondary colours.
What you need to remember:
- Mixing different wavelengths of light to produce other colours, is called an additive colour model or an additive approach to colour.
- Red, green and blue (RGB) are additive primary colours. This means that when these wavelengths of light are projected onto a dark surface they combined to produce other colours.
- If wavelengths of light corresponding with all three additive primary colours are projected in equal amounts onto a dark surface the result is white.
- If wavelengths of light corresponding with all three additive primary colours are projected in unequal amounts onto a dark surface many thousands of colours can be produced.
- Secondary colours are the colours produced when pairs of primary colours are combined in equal or unequal proportions.
Description
Using The RGB Colour Model
TRY SOME QUICK QUESTIONS AND ANSWERS TO GET STARTED
RGB is a colour model used to produce a full palette of colours by mixing red, green and blue light sources in different proportions.
_x000D_ _x000D_ Red, green and blue are the three primary colours in the RGB colour model.
RGB refers to the colours red, green and blue. These are the primary colours used by the RGB colour model to mix wavelengths of light to produce a palette of as many as 16 million colours.
About the diagram
About the diagram
- This diagram explores the RGB colour model. It looks at how wavelengths of light corresponding with the RGB primary colours are combined to produce secondary colours.
What you need to remember
- Mixing different wavelengths of light to produce other colours, is called an additive colour model or an additive approach to colour.
- Red, green and blue (RGB) are additive primary colours. This means that when these wavelengths of light are projected onto a dark surface they combine to produce other colours. The colour produced depends on the intensity of each light source.
- If wavelengths of light corresponding with all three additive primary colours are projected in equal amounts onto a dark surface the result is white.
- If wavelengths of light corresponding with all three additive primary colours are projected in unequal amounts onto a dark surface many thousands (or millions) of colours can be produced.
- Secondary colours are the colours produced when pairs of primary colours are combined in equal or unequal proportions.
Understanding the diagram
- Three circles of light are projected onto a dark surface in the top half of the diagram. These are the additive primary colours – red, green and blue.
- Where the primary colours overlap they produce the secondary colours – yellow, magenta and cyan.
- Where all three primary colours overlap they produce white.
- The bottom of the diagram shows which primary colours are mixed in pairs to produce each secondary colour. and which secondary colours produce each primary colour.
Some key terms
RGB colour model
To be clear about the RGB colour model it is useful to remember first that: The visible spectrum is the ...
What is the trichromatic colour model?
The trichromatic colour model is a theory of colour that establishes terms, rules and methods to enable human colour vision ...
Secondary colour
A secondary colour is a colour made by mixing two primary colours in a given colour space. The colour space may be produced by an additive colour model that ...
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