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  2. Analogous colors - Wikipedia

    en.wikipedia.org/wiki/Analogous_colors

    For example, by some definitions, it would be impossible to use Goethe's color wheel for analogous colors, because they do not share a common color, such as blue-green. If you wanted to use the analogous colors blue, blue-green, and green with Boutet's color wheel on the left, you wouldn't be able to.

  3. Bezold effect - Wikipedia

    en.wikipedia.org/wiki/Bezold_effect

    Demonstration of the Bezold effect. The red seems lighter combined with the white, and darker combined with the black. The Bezold effect is an optical illusion, named after a German professor of meteorology Wilhelm von Bezold (1837–1907), who discovered that a color may appear different depending on its relation to adjacent colors.

  4. Complementary colors - Wikipedia

    en.wikipedia.org/wiki/Complementary_colors

    In this traditional scheme, a complementary color pair contains one primary color (yellow, blue or red) and a secondary color (green, purple or orange). The complement of any primary color can be made by combining the two other primary colors. For example, to achieve the complement of yellow (a primary color) one could combine red and blue.

  5. Color theory - Wikipedia

    en.wikipedia.org/wiki/Color_theory

    When lightening a color this hue shift can be corrected with the addition of a small amount of an adjacent color to bring the hue of the mixture back in line with the parent color (e.g. adding a small amount of orange to a mixture of red and white will correct the tendency of this mixture to shift slightly towards the blue end of the spectrum).

  6. Color wheel - Wikipedia

    en.wikipedia.org/wiki/Color_wheel

    A color wheel or color circle [1] is an abstract illustrative organization of color hues around a circle, which shows the relationships between primary colors, secondary colors, tertiary colors etc. Some sources use the terms color wheel and color circle interchangeably; [ 2 ] [ 3 ] however, one term or the other may be more prevalent in ...

  7. Oriented coloring - Wikipedia

    en.wikipedia.org/wiki/Oriented_coloring

    If the cycle is colored by four or fewer colors, then either two adjacent vertices have the same color, or two vertices two steps apart have the same color. In the latter case, the edges connecting these two vertices to the vertex between them are inconsistently oriented: both have the same pair of colors but with opposite orientations.

  8. Red - Wikipedia

    en.wikipedia.org/wiki/Red

    It is a primary color in the RGB color model and a secondary color (made from magenta and yellow) in the CMYK color model, and is the complementary color of cyan. Reds range from the brilliant yellow-tinged scarlet and vermillion to bluish-red crimson , and vary in shade from the pale red pink to the dark red burgundy .

  9. White - Wikipedia

    en.wikipedia.org/wiki/White

    It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully reflect and scatter all the visible wavelengths of light. White on television and computer screens is created by a mixture of red, blue, and green light. The color white can be given with white pigments, especially titanium dioxide. [3]