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  2. Eye color - Wikipedia

    en.wikipedia.org/wiki/Eye_color

    The irises of human eyes exhibit a wide spectrum of colours. Eye color is a polygenic phenotypic trait determined by two factors: the pigmentation of the eye's iris [1] [2] and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris. [3]: 9

  3. Impossible color - Wikipedia

    en.wikipedia.org/wiki/Impossible_color

    The human eye's red-to-green and blue-to-yellow values of each one-wavelength visible color [citation needed] Human color sensation is defined by the sensitivity curves (shown here normalized) of the three kinds of cone cells: respectively the short-, medium- and long-wavelength types.

  4. Heterochromia iridum - Wikipedia

    en.wikipedia.org/wiki/Heterochromia_iridum

    The affected eye may be hyperpigmented (hyperchromic) or hypopigmented (hypochromic). [3] In humans, an increase of melanin production in the eyes indicates hyperplasia of the iris tissues, whereas a lack of melanin indicates hypoplasia. The term is derived from Ancient Greek: ἕτερος, héteros "different" and χρῶμα, chrôma "color ...

  5. Black Cat Shows Off Rare Eye Color in Viral TikTok Video

    www.aol.com/lifestyle/black-cat-shows-off-rare...

    A gorgeous cat named Clementine has captured hearts on the internet for her marvelous and extremely rare orange eyes. She is a black-colored British Shorthair feline who lives with Rachel, her ...

  6. Color vision - Wikipedia

    en.wikipedia.org/wiki/Color_vision

    The RGB color model, therefore, is a convenient means for representing color but is not directly based on the types of cones in the human eye. The peak response of human cone cells varies, even among individuals with so-called normal color vision; [8] in some non-human species this polymorphic variation is even greater, and it may well be adaptive.

  7. Dichromacy - Wikipedia

    en.wikipedia.org/wiki/Dichromacy

    The resulting color vision is simpler than typical human trichromatic color vision, and much simpler than tetrachromatic color vision, typical of birds and fish. A dichromatic color space can be defined by only two primary colors. When these primary colors are also the unique hues, then the color space contains the individuals entire gamut. In ...

  8. Orange (colour) - Wikipedia

    en.wikipedia.org/wiki/Orange_(colour)

    Orange is the colour between yellow and red on the spectrum of visible light. The human eyes perceive orange when observing light with a dominant wavelength between roughly 585 and 620 nanometres. In traditional colour theory, it is a secondary colour of pigments, produced by mixing yellow and red. In the RGB colour model, it is a tertiary colour.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!