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  2. Stellar classification - Wikipedia

    en.wikipedia.org/wiki/Stellar_classification

    Stellar classification. In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines.

  3. Color symbolism - Wikipedia

    en.wikipedia.org/wiki/Color_symbolism

    Orange is a secondary color across many models of color space. It is often associated with amusement, extroversion, fire, energy and activity. It is the color most closely associated with autumn and leaves. It is one of the most attention-grabbing colors in human vision, and is often used to attract the eye (traffic cones, safety vests, etc.).

  4. Color wheel - Wikipedia

    en.wikipedia.org/wiki/Color_wheel

    In color theory, a color scheme is the choice of colors used in design for a range of media. For example, the use of a white background with black text is an example of a common default color scheme in web design. Color schemes are logical combinations of colors on the color wheel. Color schemes are used to create style and appeal.

  5. Here's What the Black History Month Colors Are and What They Mean

    www.aol.com/heres-black-history-month-colors...

    Design by Yoora Kim. When you see posters and graphics related to Black History Month, chances are you'll see them designed with the same four colors: red, black, green, and gold. These colors are ...

  6. Color theory - Wikipedia

    en.wikipedia.org/wiki/Color_theory

    Color theory, or more specifically traditional color theory, is the historical body of knowledge describing the behavior of colors, namely in color mixing, color contrast effects, color harmony, color schemes and color symbolism. [1] Modern color theory is generally referred to as Color science. While there is no clear distinction in scope ...

  7. Wait: Why is Halloween all black and orange? The meaning ...

    www.aol.com/news/halloween-colors-history...

    And it's not just black and orange that represent All Hallow's Eve either. In recent years, green and purple have also risen in popularity, adding to the mix of colors that are linked to October 31.

  8. Complementary colors - Wikipedia

    en.wikipedia.org/wiki/Complementary_colors

    In the traditional RYB color model, the complementary color pairs are red – green, yellow – purple, and blue – orange. Opponent process theory suggests that the most contrasting color pairs are red–green and blue–yellow. The black - white color pair is common to all the above theories.

  9. Color scheme - Wikipedia

    en.wikipedia.org/wiki/Color_scheme

    Color scheme. In color theory, a color scheme is a combination of 2 or more colors used in aesthetic or practical design. Aesthetic color schemes are used to create style and appeal. Colors that create a harmonious feeling when viewed together are often used together in aesthetic color schemes. Practical color schemes are used to inhibit or ...