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A blue rose is a flower of the genus Rosa (family Rosaceae) that presents blue-to-violet pigmentation instead of the more common red, white, or yellow, through use of artificial means such as dyes. Blue roses are often used to symbolize mystery or the unattainable, [ 1 ] since they do not exist in nature because of genetic limitations.
The Color Purple is a 1985 American epic coming-of-age period drama film that was directed by Steven Spielberg and written by Menno Meyjes.It is based on the Pulitzer Prize–winning 1982 novel of the same name by Alice Walker and was Spielberg's eighth film as a director, marking a turning point in his career as it was a departure from the summer blockbusters for which he had become known.
In purple urine bag syndrome, bacterial enzymes that colonize the urinary catheter, specifically sulfatases and phosphotases, convert indoxyl sulfate to the colored compounds indirubin and indigo. [4] When oxidized indirubin becomes a reddish color while indigo becomes blue. [11]
Crayola crayons set up a color naming system similar to that used in the Munsell Color Wheel, except that violet instead of purple was used as the secondary color on the color wheel between red and blue. The web color fuchsia is equivalent to the pure chroma on Munsell Color Wheel of the Munsell color system that is designated as "5RP" (reddish ...
Cobalt blue is a blue pigment made by sintering cobalt(II) oxide with aluminium(III) oxide (alumina) at 1200 °C. Chemically, cobalt blue pigment is cobalt(II) oxide-aluminium oxide, or cobalt(II) aluminate, CoAl 2 O 4.
Colors known as kinjiki (禁色, "forbidden colors") were strictly reserved for the robes of the Imperial family and highest ranking court officials; for example, the color ōtan (orange) was used as the color for the robes of the Crown Prince and use by anyone else was prohibited.
Rarer genetic conditions causing color blindness include congenital blue–yellow color blindness (tritan type), blue cone monochromacy, and achromatopsia. Color blindness can also result from physical or chemical damage to the eye, the optic nerve, parts of the brain, or from medication toxicity. [2] Color vision also naturally degrades in old ...
Prussian blue is strongly colored and tends towards black and dark blue when mixed into oil paints. The exact hue depends on the method of preparation, which dictates the particle size. The intense blue color of Prussian blue is associated with the energy of the transfer of electrons from Fe(II) to Fe(III).