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In the book Grammar of Ornament, the author Owen Jones sets out certain propositions concerning the design of ornament. "Ornament" includes any type of design used to decorate an object. Thus, the term includes repeating patterns, non-repeating patterns, designs that use polygons, and designs that use irregular shapes. Tessellations are a subset (i.e., a small portion of) of the larger category of ornament. Many of Jones' propositions, nevertheless, are relevant to the design of tessellations, especially color-related issues. Some of his ideas concerning the balance of color are described and illustrated as follows.
Idea 1
The primary colors, red, yellow, and blue, are too pure, strong, and bright to the eye to be present in large amounts.
Idea 2
In the figure above, the image on the right has too much yellow. When looking at it from a distance, yellow is the main color that you see. On the other hand, the image on the left has the amounts of colors adjusted for balance. Thus, when looking at it from a distance, all colors seem to have equal weight.
Idea 3
In the figure above, the image on the right has too much orange. When looking at it from a distance, orange is the main color that you see. On the other hand, the image on the left has the amounts of colors adjusted for balance. Thus, when looking at it from a distance, all colors seem to have equal weight. Notice that the proportion 8:13:11 was obtained by adding the appropriate numbers from the proportion of primary colors. For example, 8 for orange was obtained by adding 5 and 3, the weights of red and yellow, respectively. How do primary colors compare to secondary colors? We can use the adding technique just described to answer this question. Since 5/16 red can be balanced by 3/16 yellow and 8/16 blue, then 5/16 red can also be balanced by (3+8)/16 = 11/16 of the color that is obtained by mixing yellow and blue, which is green. Similarly, 3/16 yellow is equivalent to (5+8)/16 = 13/16 orange, and 8/16 blue is equivalent to (5+3)/16 = 8/16 orange.
Idea 4
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