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Viola sororia ( / vaɪˈoʊlə səˈrɔːriə / vy-OH-lə sə-ROR-ee-ə ), [ 5] known commonly as the common blue violet, is a short-stemmed herbaceous perennial plant native to eastern North America. It is known by a number of common names, including common meadow violet, purple violet, woolly blue violet, hooded violet, and wood violet.
The purple violet is a low-growing perennial herbaceous plant up to 20 cm (8 in) tall. The leaves form a basal cluster; they are simple, up to 10 cm (4 in) broad, with an entire margin and a long petiole. The flowers are violet, dark blue and occasionally white. with five petals. The fruit is a capsule 10–15 mm ( – in) long, which splits ...
Red-violet refers to a rich color of high medium saturation about 3/4 of the way between red and magenta, closer to magenta than to red. [ 1] In American English, this color term is sometimes used in color theory as one of the purple colors—a non- spectral color between red and violet that is a deep version of a color on the line of purples ...
The blue-dominated spectral color beyond blue is referred to as purple by many speakers in the United States, but this color is called violet by many speakers in the United Kingdom. [ 3 ] [ 4 ] In some British authoritative texts the term purple refers to any mixture of red and blue, suggesting the color term purple covers the full range ...
If defined as blue-dominated colors between blue and red, violet colors in Munsell's system would be classified as having the 7.5PB and 10.0PB hue, which is confirmed in visual experiments [6] The truly purple color, defined as being within the range of the red-dominated colors between red and blue, is sometimes confusingly labeled as red ...
The spectral colors from red to violet are divided by the notes of the musical scale, starting at D. The circle completes a full octave, from D to D. Newton's circle places red, at one end of the spectrum, next to violet, at the other. This reflects the fact that non-spectral purple colors are observed when red and violet light are mixed.
Chromostereopsis. Blue–red contrast demonstrating depth perception effects. 3 Layers of depths "Rivers, Valleys & Mountains". Chromostereopsis is a visual illusion whereby the impression of depth is conveyed in two-dimensional color images, usually of red–blue or red–green colors, but can also be perceived with red–grey or blue–grey ...
Description. It grows as a shrub 60 –100 cm tall. The leaves are dark green on the upper surface and pale green on the lower surface. They are elliptic to narrowly ovate. The flowers are about 5 cm long, funnel-shaped in violet, pink, or white color. The fruits are about 1.5 cm long ellipsoid capsules. They become glabrous and glossy at maturity.