Presentación de PowerPointd20uo2axdbh83k.cloudfront.net/20140905/11625edc94702292b896… ·...
Transcript of Presentación de PowerPointd20uo2axdbh83k.cloudfront.net/20140905/11625edc94702292b896… ·...
COLOUR ---------------------------------
ana ralero
INDEX
1.- COLOUR PERCEPTION. DEFINITION •LIGHT
•EYES
•MATTER (OBJECT)
2.- COLOUR TYPES.
•LIGHTS COLORS
•PYGMENTS COLORS
3.- QUALITIES OF COLOUR
•HUE
•LUMINANCE
•SATURATION
4.- COLOUR ORDER
•HARMONY (WARM AND COOL COLORS & ANALOGUS COLORS )
•CONTRAST (COMPLEMENTARY COLORS)
COLOUR
DOES NOT
EXIST
IT IS A SENSATION THAT IS PRODUCED BY OUR
BRAIN AND ONLY EXISTS IN OUR MIND
COLOUR
PERCEPTION
COLOUR PERCEPTION
The elements that we need to see
colors are: • The Light
• Our Eyes
•Matter (the object)
Colour can only exists when the three components are present.
LIGHT
COLOUR PERCEPTION
LIGHT
Although pure white light
is perceived as colourless,
it actually contains all colours
in the visible spectrum.
La joven de la perla de VERMEER
Eyes Human Vision
HUMAN VISION The human eye is equipped with a variety of optical elements
including the cornea, iris, pupil, a variable-focus lens, and
the retina.
When an object is observed, it is first focused through the cornea
and lens onto the retina, where, like a camera, an inverted image
is produced.
The retina is where all light detection takes place. The retina is a network
of nerves connected to over 100 million photo-sensitive rods and cones.
The signals created by these rods and cones are then sent via the optic
nerve to the brain, and in the brain there are differents procces that
permit us to understand what we are seeing; that is the visual perception.
Rod cells are better for low-light vision,
but can only sense the intensity of light,
that means that we understand the volume
of the different objects; while cone cells
can also discern colour.
Three types of cone cells exist in your eye,
with each being more to either short (S) (blue light), medium (M) (green
light), or long (L) (red light) wavelength light.
Matter
(The object)
MATTER (THE OBJECT)
•When light shines on an object the
surface absorbs all or part of that light.
This is called absorption.
•The part of the white light that is not
absorbed by the surface, bounces off
the object, changes direction and this
produces the sensation of colour. That is
called reflection.
When white light hits an object, it selectively blocks some
colours and reflects others; only the reflected colours
contribute to the viewer's perception of colour.
PROCESS:
COLOUR TYPES
LIGHT COLOUR
&
PIGMENT COLOUR
Light Colour
white
red green
blue
The primary colours of light are red, blue, and green, and the secondary
are yellow, cyan, and magenta.
It is very important to know that mixing pigment and mixing light are
the opposite.
Red + green = yellow
Red + blue = magenta
Green + blue = cyan
The more we mix the beams, the closer they get to being white light.
Additive colours are seen in televisions, nature, and the computer screen
you are looking at right now. Amazingly enough, colours are perceived
in our eyes and brains by a three-color code; three different particles in
the retina are sensitive to—you guessed it—red, blue, and green.
LIGHT COLOUR
PIGMENT
COLOURS
PIGMENT COLOURS
cyan
yellow magenta
black
The primary pigment colours are yellow, cyan, and magenta and the
secondary are red, blue, and green.
It is very important to know that mixing pigment and mixing light are
the opposite.
yellow + magenta = orange red
magenta + cyan = blue (violet)
cyan + yellow = green
The more we mix the pigments, the closer they get to being black.
Subtractive Colour is used for printed publications such as newspapers
and magazines. You also use a sustractive colour in yours drawings, as
well as artists in their masterpieces or paintings.
PIGMENT COLOURS
THE
QUALITIES
OF
COLOUR
In the world of colour, we can order each one by three
different qualities:
• HUE
• LUMINANCE
• SATURATION
QUALITIES OF COLOUR
QUALITIES OF COLOUR
HUE
Hue simply means the actual shade or colour
QUALITIES OF COLOUR
LUMINANCE
Luminance is what is described when we
say that a colour is either light or dark.
QUALITIES OF COLOUR
SATURATION
Saturation is just how pure the hue is.
Munsell´s Tree
Charpentier´s Cube
Chromatic
wheel
COLOUR ORDER
From the 19th to the 20th century, three significant forms were
created to show the order of colours depending of the
hue, the luminance, and the saturation.
COLOUR
HARMONY
Harmony can be defined as a pleasing arrangement of parts, whether it be music,
poetry, colour…
COLOUR HARMONY
In visual experiences, harmony is something that is pleasing to the eye.
It engages the viewer and it creates an inner sense of order, a balance in the
visual experience.
Colour harmony delivers visual interest and a sense of order.
Harmony is a dynamic equilibrium.
WARM AND COOL COLOURS Warm colours are vivid and energetic, and tend to advance in space, these colours
are side by side from magenta to green-yellow.
Cool colours give an impression of calm, and create a soothing impression, these
colours are side by side from magenta to green-blue.
ANALOGUS COLOURS Another formula for harmony colours is the scheme based on analogous colours
Analogous colours are any three colours which are side by side on a 12 part colour
wheel, such as yellow-green, green and cyan-green. Usually one of the three colours
predominates in the composition.
COMPLEMENTARY COLOURS
CONTRAST
Complementary colours are opposite each other on the colour
wheel.
COMPLEMENTARY COLOURS
Magenta is the complementary colour of green
Yellow is the complementary colour of blue-violet
Cyan is the complementary colour of red-orange
When placed next to each other,
complementary colours tend to look
balanced and, they appear brighter.
MONET
IMPRESSIONISM