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Welcome at To be defined, a website filled with creativity. Here you will find numerous manuals in words and images on various subjects. On this page you can only see a selection. Choose from the menu on the left for more articles on your favorite topic.

DuetHarmony of Colors:

Color harmony means that the combination of chosen colors is found to be beautiful. Although this is a subjective concept, many people still find the same things beautiful. From the color systematics, we can conclude that a combination is beautiful if it is built on a systematic coherence. These are the combinations we assemble according to a color wheel. This theory is mainly used in floral art but can also serve as a guideline for color choice in painting.
  • Monochrome Harmony: This consists of only one hue and a number of its nuances, all in yellow, for example. We also call this ton sur ton or tone on tone.
  • Analogous Harmony: If we choose a combination that is slightly further apart than in monochrome harmony, we call this an analogous or adjacent harmony.
TriadTetradThe monochrome and analog combinations are also called "on color", in analogy, this is only the case if the colors are close together.

  • Duet (bichromatic combinations): If we choose two opposite colors, we call this a complementary duet.
  • Triad (trichromatic combinations): If we choose three colors equidistant in the circle, we call this a regular triad. If we choose a combination where one or two of the colors are just next to the regularly chosen colors, we call this an irregular triad.
  • Tetrad: If we choose four colors equidistantly, we call this a regular tetrad. If we choose a combination where one or more of the colors are just next to the regularly chosen colors, we call this an irregular tetrad.
  • Polychrome Harmony: Here we combine multiple color tones. Handy here is the help of the schemes of the duet, triad, tetrad, and more, we also call this color chords or color harmonies.
  • Achromats: These are all nuances between white and black. They are the grays or the non-colors. We also call it neutral colors.
Color theory Johannes Itten


Book recommendation:

This "Kleurenleer" by Johannes Itten is an abridged edition - without reproductions of the paintings - of his famous book "The Art of Color" (published in Dutch under the title "Kunst en kleur"). This study edition provides the entire color theory. It is a very useful book intended for artists, teachers, and students of art and design schools, and for all those interested in color. Color Theory, by Johannes Itten. Paperback, Cantecleer Publisher ISBN10: 9021300583 ISBN13: 9789021300580