Colour and contrast.
Our eyes are fooled into thinking that they can see the full spectrum of colours when in fact we only see red green and blue. This is because there are two colour systems that mix together so that we perceive all colours in the spectrum.
Additive colour system: Light where the primaries are red, green and blue and add up to make white.
Subtractive colour system: Ink, where the primaries are cyan, magenta and yellow and add up to make black (K).
There are 7 contrasts that occur when we look at colours and these are called Ittens contrasts.
Contrast of Tone - Formed by juxtaposition of light and dark colours. This can be monochromatic.
Contrast of Hue - Formed by the juxtaposition of different hues. The greater the distance between the hues on the colour wheel the greater the contrast.
Contrast of Saturation - Formed by the juxtaposition of lights and dark, and is in three dimensions; Hue, tint and shade, and brightness and dullness.
Contrast of Extension - Formed by assigning proportional field sizes in relation to the visual weight of a colour. This is also know as contrast of proportion.
Contrast of temperature - Formed by juxtaposing hues that can be considered 'warm' or 'cool'.
Complimentary Contrast - Formed by juxtaposing complementary colours - Opposite colours on the colour wheel.
Simultaneous Contrast - Formed when boundaries between colours perpetually vibrate.
We then went on to do 10 experiments to explore these contrasts, and so I chose 10 objects and placed them onto different coloured papers to see how the contrast of hue changed with each of them.
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| Red can on red card |
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| Red can on green card |
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| Red can on yellow card |
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| Red can on blue card |
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| Red can on orange card |
For this object i found that the highest contrast of hue was with the green coloured paper, the lowest contrast was with the red coloured paper and the middle contrast was the orange coloured paper.
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| Red plastic on red card |
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| Red plastic on green card |
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| Red plastic on yellow card |
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| Red plastic on blue card |
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| Red plastic on orange card |
For this object i found that the contrast of hue was highest with the green coloured paper, the lowest contrast was with the red coloured paper and the middle contrast was with the yellow paper.
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| Red pencil on red card |
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| Red pencil on yellow card |
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| Red pencil on blue card |
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| Red pencil on orange card |
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| Red pencil on green card |
For this object I found that the highest contrast was with the blue coloured paper, the lowest was with the red coloured paper and the middle contrast was with yellow coloured paper.
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| Red box on red card |
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| Red box on green card |
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| Red box on yellow card |
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| Red box on blue card |
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| Red box on orange card |
For this object i found That the highest contrast of hue was with the green coloured paper, the lowest contrast was with the red coloured paper and the middle contrast was with the yellow.
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| Green bag on red card |
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| Green bag on green card |
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| Green bag on yellow card |
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| Green bag on blue card |
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| Green bag on orange card |
For this object i found that the highest contrast of hue was with the red coloured paper, the lowest contrast was with the yellow coloured paper and the middle was with the blue.
For this object I found that the highest contrast of hue was with the green coloured paper, the lowest was with the orange paper and the middle contrast was the red coloured paper
For this object i found that the highest contrast was with the green coloured paper, the lowest was with the red paper and the middle contrast was the yellow coloured paper.
For the blue part of this object, i found that the highest contrast was with the red coloured paper, the lowest contrast was with the blue and the middle contrast was with the yellow paper.
For this object I found that the highest contrast of hue was with the red coloured paper, the lowest contrast was with the blue and the middle contrast was either the yellow or orange paper.
For this object i found that the highest contrast was with the red coloured paper, the lowest contrast was with the green paper and the middle contrast was the yellow coloured paper.
From these experiments using lots of different objects it is quite clear how the contrast of hue works. The highest contrast in all of these object lies in the opposite colours on the colour wheel, or complimentary colours and the lowest contrasts lies on the same side of the colour wheel to the objects.