Alizarin Crimson

Alizarin crimson is a shade of red that is biased slightly more towards purple than towards orange on the color wheel and has a blue undertone.

It is named after the organic dye alizarin, found in the madder plant, and the related synthetic lake pigment alizarin crimson (PR83 in the Color Index).

Alizarin crimson is known for its capacity to create a wide range of rich, permanent purples and browns.

It is a deep, cool red with a high tinting strength and, despite concerns about its lightfastness, many artists find the colour indispensable.

Alizarin crimson can be represented by the hexadecimal code #E32636 or the RGB values 227, 38, 54.

Alizarin Crimson is a shade of red that is biased slightly more towards purple than towards orange on the color wheel and has a blue undertone.

It is named after the organic dye alizarin, found in the madder plant, and the related synthetic lake pigment alizarin crimson.

It is a transparent, intense, and staining color, but it has a low permanency rating.

Some examples of Alizarin Crimson color in life are: - The color of some roses, such as the Rose Madder.

- The color of some fruits, such as cherries, cranberries, and pomegranates.
- The color of some fabrics, such as silk and velvet, dyed with alizarin or madder.
- The color of some paintings, such as those by Bob Ross who used Alizarin Crimson frequently on his show The Joy of Painting.

Another name for alizarin crimson is madder lake.

Madder lake was a historical pigment used since antiquity, but it was replaced by the synthetic lake pigment alizarin crimson in the nineteenth century.

Alizarin crimson is a deep, cool red with a blue undertone, and it can create a wide range of rich, permanent purples and browns.

It is a popular colour for artists, especially for glazing techniques.

• Painting: Alizarin crimson is a popular pigment for artists, especially for oil and watercolour painting.
  It can create rich, permanent purples and browns when mixed with other colours, and it has a high tinting strength.
  It is also transparent, which makes it ideal for glazing techniques.

• Dyeing: Alizarin crimson is derived from the organic dye alizarin, which is found in the madder plant.
  It has been used for dyeing fabrics since ancient times, and it was one of the first natural dyes to be synthesized.
  It produces a vivid reddish-orange colour that can vary depending on the mordant used.

• Printing: Alizarin crimson is also used for printing processes, such as lithography and woodcut.
  It can create sharp contrasts and dramatic effects when combined with other colours.
  It is also suitable for printing on different types of paper and textiles.

Alizarin is a natural red dye that was historically derived from the roots of the madder plant.

It was widely used for textile dyeing in ancient and medieval times, especially for the Turkey red process.

However, in 1869, alizarin became the first natural dye to be synthesized from anthraquinone, a chemical compound found in coal tar.

This led to the decline of the natural product in the market, as the synthetic dye was cheaper and more consistent in quality.

Today, alizarin is still used as a dye, but to a lesser extent than in the past.

It is mainly used for artistic purposes, such as painting and printing.

Alizarin is also used as a staining agent in biological research, as it can bind to free calcium and certain calcium compounds, producing a red or purple color.

Alizarin can also change color depending on the pH of the solution it is in, making it a pH indicator.

Alizarin is one of the oldest and most important natural dyes, and it has influenced the development of many synthetic dyes and pigments.

It is also a valuable tool for scientific and artistic applications, as it can reveal the presence and properties of various substances.

Alizarin is a remarkable example of how nature and human ingenuity can create beautiful and useful colors.

• Alizarin was originally obtained from the root of the common madder plant, Rubia tinctorum, where it occurs as a glycoside.
  Madder was cultivated as a dyestuff since antiquity in central Asia and Egypt, and was used to dye cloth found in the tomb of Tutankhamun, the ruins of Pompeii, and ancient Athens and Corinth.

• Alizarin became the first natural dye to be synthesized in 1869 by Carl Graebe and Carl Liebermann, who isolated it from coal tar.
  This marked the beginning of the modern era of synthetic dyes, which gradually replaced natural dyes in the textile industry.

• Alizarin is one of the ten isomers of dihydroxyanthraquinone, and has the chemical formula C14H8O4.
  It forms insoluble, intensely colored chelate complexes with multivalent metal ions, called alizarin lakes.

• Alizarin is also used as a staining agent in biological research, because it stains free calcium and certain calcium compounds a red or light purple color.

• Alizarin is a pH indicator, meaning that it changes color depending on the acidity or alkalinity of the solution it is in.
  It is orange-red in acidic solutions, purple in neutral solutions, and yellow in alkaline solutions.

• Flowers, such as roses, poppies, geraniums, and peonies.
  Alizarin crimson can capture the vibrant and delicate beauty of these blooms.

• Paintings, especially those with a romantic or dramatic mood.
  Alizarin crimson was a popular color for artists such as Vincent van Gogh, Claude Monet, and Paul Cézanne.
  It can add depth, contrast, and emotion to any artwork.

• Clothes, especially for formal or festive occasions.
  Alizarin crimson can make a bold and elegant statement, whether it is a dress, a suit, a scarf, or a tie.
  It can also complement different skin tones and hair colors.