1. 3 primary, 3 secondary, 6 tertiary
Colors (analysis)
Natural light spectrum, a continuum
Color wheel
3 primary, 3 secondary, 6 tertiary
Color star
Color sphere

2. Colors (production) Additive color mixing (slide, projection, etc.)
Subtractive color mixing (pigment, paint, print, etc.)

3. Colors (production in printing)
The Pantone® system

4. Printing colors Positive / RGB system Negative / CMY system
The 4-color process

5. Printing colors
Addition of CMJK (k=black) dots produce a color picture in a 4-color process

6. Photography (autochrome process)
Georges Seurat, Le Pont de Courbevoie, , Institut Courtauld

7. Oil (traditional)
Rembrandt, Anatomy Lesson of Professor Nicolaes Tulp, 1632 (The Hague)

8. Oil (Alla Prima)
Claude Monet, Impression au soleil levant, 1872 (musée Marmottan)

9. Tempera
Grant Wood, Fall Plowing(1931)

10. Watercolor
John Singer Sargent (1856–1925), Florence: Fountain, Boboli Gardens
about 1906–07
John Singer Sargent, Torre Galli, Wine Bag,1910

11. Color effects
You may visit and study :

12. Use of color in painting
El Greco, Vue de Tolède, 1600
New York, Metropolitan Museum of Art
Georges de la Tour,
La Madeleine repentante,
Metropolitan Museum of Art, New York
Georges de la Tour, L’adoration des bergers,1644
Musée du Louvre

13. Use of color in painting
Yves Klein, Nu couché bleu, 1955
Collection particulière
Hans Hofmann, Equinox, 1958
(push pull effect)
Piet Mondrian, Composition, 1929
Victor Vasarely, Vonal Stri, 1975
Nicolas de Stael, Parc des Princes (Les Grands Footballeurs), 1952
Collection particulière

14. J.M.W. Turner, Rain, Steam and Speed - The Great Western Railway, 1844

15. Sites Color theory (wikipedia) Couleur complémentaire
Color site (nuances, vocabulary, etc.)
Color site 2
Victoria & Albert Museum on oil painting technique
Victoria & Albert Museum on watercolor technique
Color symbolism
Color tutorial