miércoles, 19 de septiembre de 2012

Ansin, Vieytes, Álvarez


BASIC COLOR THEORY
Color theory encompasses a multitude of definitions, concepts and design applications -
enough to fill several encyclopedias. However, there are three basic categories of color theory
that are logical and useful : The color wheel, color harmony, and the context of how colors
are used.
Color theories create a logical structure for color. For example, if we have an assortment of
fruits and vegetables, we can organize them by color and place them on a circle that shows
the colors in relation to each other.
The Color Wheel
A color circle, based on red, yellow and blue, is traditional in the field of art. Sir Isaac
Newton developed the first circular diagram of colors in 1666. Since then, scientists and
artists have studied and designed numerous variations of this concept. Differences of opinion
about the validity of one format over another continue to provoke debate. In reality, any color
circle or color wheel which presents a logically arranged sequence of pure hues has merit.
There are also definitions (or categories) of colors based on the color wheel. We begin with a
3-part color wheel.
- Primary Colors: Red, yellow and blue
In traditional color theory (used in paint and pigments), primary colors are the 3 pigment
colors that can not be mixed or formed by any combination of other colors. All other colors
are derived from these 3 hues.
- Secondary Colors: Green, orange and purple
These are the colors formed by mixing the primary colors.
- Tertiary Colors: Yellow-orange, red-orange, red-purple,
The color systems used by scientists and artists are entirely different. An artist will mix blue and yellow paint to get a shade of green; a scientist will mix green and red light to create yellow. The printed page in a magazine is yet another system.
It's important to define the two different kinds of color that we see in the world as the first step in understanding color systems. First, there's the color you can touch, such as the skin of an apple or a painted wall. These colors are part of the surface of an object. Next, there's the color you can't touch, such as a beam of red light and the colors produced by your computer monitor. Colors generated by light are part of one color system. The tangible colors which are on the surface of objects or on the printed page are another color system.
The following illustrations and descriptions define the different color systems.
1. Additive Color System
Red - Green - Blue (RGB)


RGB diagram

Scientists recognize the light primaries of red, green and blue. When combined, red and green light rays produce yellow, blue and green produce cyan, red and blue produce magenta. Red, green and blue mix to create white (light). Link to How the Eye Sees Color  for more information on the "additive" definition of light. This color model is used in computer monitors, television sets, and theater.
2. Subtractive Color System
Red - Yellow - Blue
http://www.colormatters.com/images/images1/3partwheel.gif
secondary colors
http://www.colormatters.com/images/images1/12part.gif
Primary Colors
Secondary Colors
Tertiary Colors
Most artists recognize red, yellow and blue as the 3 basic primary colors. These primaries are the pure colors which can not be created by mixing any other colors. Secondary hues are the result of mixing any of the two primaries. Tertiary colors result from mixing the secondary hues.
In subtractive color theory, all colors mix to yield black. Link to "How the Eye Sees Color" for more information about why this color system is subtractive.

3. The CMYK Color System
Cyan - Magenta - Yellow - Black
http://www.colormatters.com/images/images1/cmyk.gif
In the print industry, cyan, magenta, yellow and black are used as the primary colors. When you mix all the colors, the result is gray. If you look at a printed page with a magnifying glass you might see something like the illustration below.











 
                                V o F


1. La teoría del color incluye una variedad de conceptos.
2. en el campo del arte un círculo de color es basado en: negro, anaranjado y violeta.
3. Bolt desarrollo el primer diagrama circular de los colores.
4. existen categorías de colores en función de la rueda de color. 
 
Elige la opción correcta


1¿Cuáles son los tres colores primarios pigmento en la teoría tradicional del color?
a- rojo
b- amarillo
c- azul


a- rojo
b- amarillo
c- gris
 
a- verde
b- anaranjado
c- negro




2. Newton desarrollo el primer diagrama circular de colores en el año: 
 
a- 1650                       b- 1666                          c- 1661

3. un científico para obtener luz amarilla mezclará luces de color:
 
a- rojo
b- amarillo

a- rojo
b- verde

a- verde
b- anaranjado





  
 


4. En el sector de la industria de la impresión son usados como colores primarios:

a- verde
b- anaranjado
c- negro
d- azul


a- verde
b- anaranjado
c- negro
d- rojo

a- cyan
b- magenta
c- negro
d- amarillo






5. El Additive color system es usado en:

a- arte 
 
b- industria de la impresión 
 
c- sets de televisión, teatros.




6. En el Subtractive Color System para obtener el color secundario anaranjado se mezcla:
 
a- rojo - verde                       b- rojo - azul                       c- Amarillo – rojo


Creado por Victoria Ansin – Claudia Álvarez – Tania Vieytes





































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