The document discusses the nature of color, including: - There are two types of color: color lights which are real colors in light, and color pigments which are used for painting. - Light contains all the colors we see, and the color we perceive an object as being is the color it reflects. - A prism can be used to see the spectrum of colors in light. White light is the sum of all colored lights. - The primary colors of light are red, green and blue, while the primary pigment colors are magenta, yellow and cyan. - Complementary colors are color pigment pairs that mix to make black.

1. The Colour
General characteristics
Arts & Crafts 3rd grade (ESO) Oskia Alvarez
@oskiaisuri

2. There are 2 types of colour:
-Colour lights: they are
the real colours, the ones
in light.
-Colour pigments: they
are the ones we use to
paint.

3. How Colour Works
It is light that contains all the colours we see, not the object.

4. How Colour Works
It is light that contains all the colours we see, not the object.
When something is hit by light, some of it is reflected and
some is absorbed.
The colours which are reflected are the ones we see.
Objects which reflect no light appear black.

5. The Spectrum
We can see all the colours in light by shining it through a
prism.
These colours are called the “spectrum”.

6. This is what happens when we see a rainbow.
Only the light shines through drops of water.

7. The “Spectrum”
White light is the sume of all coloured lights.
The “Spectrum” can be reconstructed in a laboratory with the
help of a cristal prisma and a torch.
This experiment was done for the first time by Isaac Newton
in 1666.

8. Coloured light and additive mixtures
-The coloured light is produced
by light rays.
-The primary colours of light are:
red, green and purple-blue.
-The mixture of these three lights
in equal quantity gives white
light. This is why it is called
additive mixture, because it goes
adding light.
-The secondary colours of light
are: cyan, magenta and yellow.

9. Colour pigments and subtractive mixtures
-The paints we use to put colour on
paper, etc. are colour pigments. They
are colour powders mixed with
agglutinants.
-There are three pigments that we
cannot get through mixtures, the
primary colour pigments: magenta,
yellow and cyan.
-The mixture of two primaries, gives a
secondary colour pigment: purple-
blue, red and green.
-This is called subtractive because
light is rested from the resulting
colour.

10. Complementary colour pigments
-Complementary colours are
pairs of opposite hues that when
mixed together give black.
-Each primary colour has its
complementary second colour
that is the one that does not
contain the primary colour on its
mixture:
Cyan + Red = Black
Yellow + Purple-Blue = Black
Magenta + Green = Black

11. Attributes of colour
-HUE: is the name of each colour. There are less
familiar colours that we define them by the hue in
its mixture: redish yellow, blueish green, etc.
-VALUE: it specifies the degree of a hue’s
lightness.
More value = lighter
Less value = darker
The pure value of a hue is when it does not
contain in it any black or white pigment.
-SATURATION: is the degree of a colour’s purity.
It refers to the amount of colours and greys that
form it.
The primary and secondary colours are the most
saturated hues.

12. Scales of colour
-Scale of cold hues:
is the one where the
blue hue is present
(blue families).
-Scale of warm hues:
is the one where red
is present (red
families).
-Scale of neutral
hues: these are the
magentas and geens
in their various
values and
saturations.

13. Chromatic harmony
-It is an equilibrated
relationship between
two or more colours.
-A chromatic harmony
occures when we use
colours for a
composition that are
close to eachother on
the colour wheel.
-For example a blue
and green harmony.

14. Chromatic contrast
-It is an optic effect
that occures when we
see at the same time
two very different
colours, for example
two complementary
colours.
-Another type of
contrast is the one
that occures between
light and dark hues.

15. This presentation is based on:
- Lucía Alvarez, “El color. Características generales” a Slideshare
presentation.
- “Explore colour” an activity in www.artisancam.org.uk website.