Human hair color account for all possible shades of brown, blond, or red (for example, platinum blond versus dark blond/light brown), nor does it explain why hair color sometimes darkens as a person ages. Several gene pairs control the light versus dark hair color in a cumulative effect. A person's genotype for a multifactorial trait can interact with the environment to produce varying phenotypes (see quantitative trait locus). Natural hair color can be brown, blond, black, red, or white; all natural hair colors including grey, white and lightest blond, are shades of brown. The Fischer–Saller scale, named after Eugen Fischer and , is
Shades of magenta Shades of magenta This article is about notable tints and shades of the color magenta. These various colors are shown below. Magenta is a color made up of equal parts of red and blue light. This would be the precise definition of the color as defined for computer display (the color #FF00FF shown in the color swatch above). It is a pure chroma on the RGB color wheel () midway between purple and rose. In HSV color space, "magenta" has a hue of 300°. Magenta is not a spectral but an "extraspectral" color: it cannot be generated by light of