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Colors and color models
by RS  admin@creationpie.com : 1024 x 640


1. Color

How many colors can be displayed by your smart phone? Or your LCD TV? Or your computer monitor?

2. Properties
A color is a property of something. There are many color models. Color and how humans see color is very complex.

There are various models of color.

3. Goethe
The famous German author and poet Johann Wolfgang von Goethe first published the color wheel in 1810 (in German, English edition in 1840) called the Theory of Colors. In German, "Zur Farbenlehre".

4. Color wheel
Many holidays have opposite colors on the Goethe color wheel.

5. Wittgenstein on color
Goethe's theory of the constitution of colours of the spectrum has not proved to be an unsatisfactory theory, rather it really isn't a theory at all. Nothing can be predicted with it. It is, rather a vague schematic outline of the sort we find in James's psychology. Nor is there any experimentum crucis which could decide for or against the theory. Ludwig Wittgenstein, Remarks on Colour, paragraphs 70 Wikipedia

Information sign More: Ludwig Wittgenstein

6. RGB model
Additive ColorsThe RGB (Red Green Blue) additive light color model (displays) has red, green, and blue.

The background is black (screen) and (projected) colors are added via light.

7. CMYK model
Subtractive ColorsThe CMYK (Cyan Magenta Yellow Black) subtractive pigment color model (printers) has cyan, magenta, yellow, and, for practical printing purposes, black.

The background is white (paper) and (reflected) colors are subtracted via pigments (by painting).

8. Colors and color models
Add/Subtract Color Models

Two ways of looking at colors: (Note: there are other useful color models) Each model is correct. In many cases, one way may be easier to work with or use than the other model.

9. True color
A color model is called "true color" if the human eye cannot distinguish between the smallest change of color in that model.

A JPG (Joint Photographic Experts Group) image has 24 bits for color, supporting more than 16,000,000 colors, and is called "true color".

Colors are extremely complex. There are colors that cannot be expressed using standard color models, but approximations can get close.

10. Projection system
Do you see black on a projection screen (or TV, or LCD monitor) etc.?

11. Skin colors
Colors 1Skin colors are mentioned in the song.
Try getting skin colors out of green, blue, magenta or cyan.

Jesus loves the little children,
All the children of the world;
Red and yellow, black and white,
They are precious in his sight, ...
Jesus loves the little children of the world.


Information sign More: Song: Jesus loves the little children

12. End of page

by RS  admin@creationpie.com : 1024 x 640