DESIGN PRACTICE: Colour theory systematic colour part 1 & 2

Systematic colour

colour is perception how we see it and think , it changes constantly. We need to find systematic ways.

Colour started in the 1700's painters , scientists colour mixing.

different colours have different properties , the higher the wave length the closer to red we see and the lower the closer to blue.

The eye contains two kinds of receptors : rods and cone

While the rods convey shades of tray the cones allow the brain to perceive colours

Of the three types of cones the first is sensitive to red-orange light , the second to green light and the third to blue-violet.

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"

Primary colours can't be made by other colours. mixing primary colours you get your secondary.
Colour Modes - Primary colours RED GREEN BLUE.

Colour Modes - cyan magenta yellow black (CYMK) black is the key adds tone.

The eye cannot differentiate between sectorial 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.

Because of this physiological response the eye can be "fooled" into seeing the full rage of visible colours through the proportionate adjustment of just three colours red green and blue

Subtractive colour mixtures of cyan magenta and yellow to produce blue green and red..

Subtractive colour Additive colour

complimentary colours cancel each other out.

Chromatic value = hue + tone + saturation

If you want to work with colour in design its has to be systematic.

Over our time off we were asked to collect 15 objects and given a colour my colour was green. We placed our colours on the desk in a large square making a colour circle. The colours were orange red purple blue green and yellow.