Caesium is a possibility; the flame test for caesium is said to be blue-violet, though I've never actually seen it so I'm not sure how blue or how violet it is. shit
Another possibility would be potassium, which I haveseen; it's theoretically "lilac", though if you're not an interior decorator you might equally validly describe it as "violet" or "a kind of purplish color".
Blue glass filters out all colors of light except for blue and violet, allowing only these colors to pass through. This selective filtering enhances our ability to see blue and violet light by blocking out other colors that may interfere with our perception of them.
The color violet has the highest energy among the visible colors. It has the shortest wavelength and the highest frequency in the visible spectrum.
violet vapours
Red, orange, yellow, green, blue, and violet represent the colors of the rainbow.
red, orange, yellow, green, blue, indigo, violet
Colors that are related to each other are analogous. They are neighbors on the color wheel and share a common color. For example, blue violet, violet, and red violet. they all contain red. The Violet (a secondary color) has been made by mixing red and blue (both primary colors). The blue-violet and red-violet (both tertiary colors) have been made by mixing the secondary color (Violet) with the primary color included in it's name. They are analogous, or relatives, because they all contain red. This holds true for any three colors on the color wheel which directly in contact with each other. See the related link for more on mixing colors.
Blue glass filters out all colors of light except for blue and violet, allowing only these colors to pass through. This selective filtering enhances our ability to see blue and violet light by blocking out other colors that may interfere with our perception of them.
White and Violet
blue violet
Violet and red-violet are made of red and blue.
There are five colors between Red and Violet. Red, Orange, Yellow, Green, Blue, Indigo, Violet.
Some six-letter colors that contain the letter "o" include "violet," "indigo," and "orange." These colors span a range of hues, from the cool tones of violet and indigo to the warm, vibrant shade of orange. Each color has its own unique associations and uses in design and art.
Blue and red will give a near violet colour.
The color violet has the highest energy among the visible colors. It has the shortest wavelength and the highest frequency in the visible spectrum.
Blue-violet is typically made by mixing the colors blue and violet together. Mixing blue and violet in varying amounts will produce different shades of blue-violet.
how to combine color to make it violet
Cool colors(blue, green , and violet