We had our introduction to colour theory with fred in our design principles lesson. It found it incredible, that the education system doesn't inform of how our eyes actually perceive colour, I never knew that our perception of yellow was a trick of the mind and combined from the green and red cones. This introduction has opened up a massive new field of information that is needed to be understood and put into practice for ourselves to become more evolved designed as a whole. There are a lot of things to take into consideration, such as people who are colour blind.
The eye contains two kinds of receptors:
Rods convey shades of black, white and gray
Cones allow the brain to perceive colour
There are three types of cones:
Type 1: is sensitive to red-orange light
Type 2: is sensitive to green light
Type 3: is sensitive to blue-violet light
When a single cone is stimulated, the brain perceives the corresponding colour
If our green cones are stimulated, we see "green".
If our red-orange cones are stimulated, we see "red".
If both our green and red-orange cones are simultaneously stimulated, our perception is "yellow"
Because of this physiological response, the eye can be "fooled" into seeing the full range of visible colours through the proportionate adjustment of just three colours:
red, blue & green
What colour blind people perceive colour as..
Johannes Itten's colour wheel.
The opposites of each colour on the wheel are complimentary colours, but when mixed together cancel each other out, which makes them enemies to some extent.
Spectral Colour
The eye cannot differentiate between spectral yellow, and some combination of red and green. The same effect accounts for our perception of cyan, magenta, and the other in-between spectral colours.
RGB / CMYK COLOUR MODES
SUBTRACTIVE COLOUR ADDITIVE COLOUR
WHen the colours from CMYK are overlapped they show the secondary colours for RGB. Also when RBG colours are overlapped, the result is the CMY colours.
Additive colour is used when working with light. It's called additive colour because one is adding light which will either reflect off a surface, in the case of a projector, or shine into the viewer's eyes, the the case of a screen.
Subtractive colour is a colour system used when dealing with physical objects, like printed material. It's referred to as subtractive because of when someone is working with pigments that absorb light rather than create it. This means that the three prime colours are the opposite of RGB, in the sense that they are the colours that absorb those colours. When pigments are combined, you can increases the number of wavelengths that are absorbed, subtracting the number that are reflected.
Additive colour is used when working with light. It's called additive colour because one is adding light which will either reflect off a surface, in the case of a projector, or shine into the viewer's eyes, the the case of a screen.
Subtractive colour is a colour system used when dealing with physical objects, like printed material. It's referred to as subtractive because of when someone is working with pigments that absorb light rather than create it. This means that the three prime colours are the opposite of RGB, in the sense that they are the colours that absorb those colours. When pigments are combined, you can increases the number of wavelengths that are absorbed, subtracting the number that are reflected.
Chromatic Value
+
Hue + Tone + Saturation
(Luminance)
Light & Darkness has to be thought about when using colours!
SHADE / TONE / TINE
PANTONES
If you want to work with colour in design it has to be
SYSTEMATIC
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