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Home Latest News Technology Indigo color: indigo blue, violet vs purple and roygbiv

Indigo color: indigo blue, violet vs purple and roygbiv

What color is indigo? This is a deep and rich color that is close to the varieties of the color blue and also to the different ultramarine colors. Indigo, as a word, originates from the Latin name for an Indian because a dye of that color was exported to Europe from India.

Indigo color: indigo blue, violet vs purple and roygbiv, what is indigo color
Indian indigo dye exported to Europe

The color itself is included in the visible spectrum and also as part of the seven colors of the rainbow. It is situated between blue and violet. Here we provide key details of the color indigo and explain key differences between it and other colors.

Top ten unknown facts about indigo

  1. Indigo is generally a deep and rich color that is close to the varieties of the color blue and also to the different ultramarine colors.
  2. The name ‘indigo’ is actually from the Latin name for an Indian and it was popularised because indigo dyes were exported to Europe from India.
  3. The indigo color code (also called indigo hex code) is #4B0082 and it means that it contains 29.4% red, 0% green and 51% blue.
  4. It is very close to violet and it is easy to mistake one for the other because of the fact that in the ROYGBIV color arrangement, they follow each other after blue.
  5. Meanwhile, violet and purple are also closely related with one unique way of differentiating them being that purple is closer to red and violet is closer to blue.
  6. Indigo exists in nature and can be found in animals like the blue grosbeak bird, eastern indigo snake and some species of mushroom plants.
  7. There are seven colors in a rainbow with indigo being the sixth before violet and after blue, when viewed in the visible light spectrum.
  8. A typical tropical color palette contains colors such as turquoise, tangerine, canary yellow, aqua, fuchsia, coral, and indigo.
  9. When Isaac Newton introduced it as a color in the mid-1660s, he called it “indico” and named the seven colors as follows: Red, yellow, Green, Blew, a violet purple, Orang, and Indico.
  10. Purple blue, blue violet, and blue purple are all generally regarded as hues or shades of indigo.

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What color is indigo?

Indigo is easily recognisable as the deepest and richest shade or hue of the color blue. While it is a popular color, it is not included in the basic color-naming system which only recognises the following colors; red, rose, orange, magenta, violet, blue, azure, cyan, spring green, green, chartreuse green, and yellow.

However, this has changed with more and more people recognising it as a particular color. In the electromagnetic spectrum, which gives the range of frequencies of electromagnetic radiation and their respective wavelengths and photon energies, indigo is placed between 420 and 450 nanometers wavelength. This puts it in the short-wave side of color wheel (RGB) blue.

Interestingly, this is a source of scientific debate as some researchers list the color as between 445 and 464 nm nanometers wavelength. This will put it more towards the azure color.

Indigo color: indigo blue, violet vs purple and roygbiv, what is indigo color
An eastern indigo snake

Apart from being obtained from mixing two colors, indigo exists in nature and can be found in animals like the blue grosbeak bird, eastern indigo snake and some species of mushroom plants.

Indigo color code

The indigo color code (also called indigo hex code) is #4B0082. Generally, a hex color code is a shorthand for a color’s RBG values. It is usually a six-digit combination of numbers and letters defined by how it contains the mixture of red, green and blue (RGB).

Indigo color code, indigo Hex Code
Indigo color code from Canva Colors

The HEX is short for hexadecimal and color hex codes have been an integral part of HTML for web design, and remain a key way of representing color formats digitally. Using hex codes, two designers or a designer and developer can be on the same page about what exact light blue (or any other color) they are referring to. This way, designers or artists do not have to rely on how others perceive color, which may differ, and can just accurately ‘show’ them the color they mean using its code.

The indigo color code 4B0082 translates to 29.4% red, 0% green and 51% blue. There are also other color code systems available for graphic designers and developers such as HTML color names, CSS colors, and Web-safe colors. They are generally referred to as web colors and are used to describe the colors that web pages use for display on the internet.

The color wheel

To understand how colors differ and relate with each other, the color wheel (also known as the color circle) was invented. This is an organisation of color hues around a circle in a way that the relationships between primary colors, secondary colors, tertiary colors etc, are clearly visible.

Additionally, most color wheels start with the three primary colors — red, yellow, and blue. Then, they include three secondary colors, and the six intermediates (also called tertiary) which are formed by mixing a primary with a secondary. The color wheel comes in different models for various purposes and fields.

Indigo color: indigo blue, violet vs purple and roygbiv, what is indigo color
Example of a color wheel

Indigo vs violet

The color indigo and violet are very close to each other and it is easy to mistake one for the other. This arises from the fact that in the ROYGBIV color arrangement, they follow each other after blue. In fact, the deep color indigo that a computer screen can produce, is also called blue violet.

Both colors appear to be inseparable and there are hues of indigo that are closer to violet than they are to indigo. Additionally, the imperial blue color is regarded as indigo as well. Indigo really threads a thin line of existence that has led many in past to call for it to be erased and just be left with blue violet color.

Blue violet color

As is well known, the field of science progresses by disagreements and debates. Nothing is truer than in the case of indigo. When Isaac Newton introduced it as a color in the mid-1660s, he placed it between the blue violet color. Newton had named the seven colors he discovered by shinning a narrow beam of sunlight through a prism as; “Red, yellow, Green, Blew, & a violet purple; together with Orang, Indico, & an indefinite varietie of intermediate gradations.”

This translates as red, yellow, green, blue, violet purple, orange, and indigo. And when he arranged the colors based on how they followed each other, we have Red, Orange, Yellow, Green, Blue, Indigo, and Violet. Thus, putting indigo between the blue violet color.

Also, notice that the arrangement birthed the Roygbiv or Roy G. Biv. acronym for the sequence of hues commonly described as making up a rainbow. There are some that dispute the color indigo being considered as a separate color. Others also opine that Newton’s indigo may have just been what we now call the color blue in modern times.

Blue violet color may seem harder to tell apart with the naked eye. Meanwhile, the violet and purple colors may also be challenging.

Violet vs purple

Armed with analytical tools to obtain such facts like wavelengths, one could easily differentiate between these two colors. In the absence of this, however, the two colors have birthed the violet vs purple rivalry.

The color violet lies between blue and invisible ultraviolet while purple is any of a variety of colors with hue between red and blue. The two colors are ‘closely’ associated and both terms refer to colors that look similar. In the field of optics, purple is formed from mixture of red light and blue or violet light while violets are spectral colors (of single wavelengths of light).

One popular way to settle the violet vs purple debate is that purple is closer to red and violet is closer to blue. Both colors are also historically linked with royalty because the original Tyrian purple dye from Tyre, Lebanon was extremely expensive.

How many colors in a rainbow?

There are seven colors in a rainbow as we have already named above. The ROYGBIV acronym is used to remember them easily, each of the letters denoting the initials of each color. Right from the time of Aristotle, between the 8th century AD and the 6th century AD, there have been hints of a scale of seven basic colors.

ROYGBIV - Wikipedia

This search went into the Renaissance period during which many artists devoted their time to coming up with a sequence of seven primary colors. Isaac Newton eventually came up with his color circle to explain how colors mixed producing the seven colors of the rainbow.

Blue purple color

The blue purple color is also a popular hue that people have done a lot of research on. Their relationship stems from the fact that purple is made by mixing red and blue together. However, the resulting mixture is usually closer to red than blue.

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Blue as we know it is one of the three primary colors and is also included in the seven colors of the rainbow (roygbiv). Whereas, purple is neither a primary color nor does it get recognition in the aforementioned rainbow colors.

It originated from Tyrian purple dye that was manufactured using the mucus secreted by the spiny dye-murex snail. The color has historical royal relevance and has depicted wealth and sophistication in the past. Purple can also be found occurring naturally in animals, plants, mountain, stars and even microbes.

The color blue is not also free of some corruption as well. What humans perceive most of the time as blue could contain some other colors like azure and violet. Blue exists between violet and green on the visible spectrum. It births other colors like indigo and ultramarine. Additionally, when approaching green from the color blue, other colors such as blue-greens turquoise, teal, and aquamarine start to appear.

Amethyst jeans

Amethyst is a violet variety of a hard, crystalline mineral or a gem stone known as quartz. It is regarded as the world’s most popular purple gemstone. Amethyst is a semiprecious stone (not as much of a big deal as diamond) but it is still used in luxury jewelry and its considered the traditional birthstone for February.

Meanwhile, the popular amethyst jeans have nothing to do with the gemstone material. Rather, it is mostly about the color hue or shade which many consider attractive. Also, the jeans are usually not purple in color.

Instead, the way the color fade and then return to normal from the top part to the bottom part is what earns it its name. This is in regard to how amethyst gemstones give off a whitish shade somewhere in the center as well.

Indigo color: indigo blue, violet vs purple and roygbiv, what is indigo color
Amethyst jeans (left) and Amethyst gemstone (right)

Amethyst jeans are also popularly called faded jeans and they have been a trend of denim wears among both men and women for a long time. It is obviously not going out of fashion anytime soon. Many online vendors offer it for sale under different names and designs.

Purple blue color

Purple is a color that exists between shades of red and blue. It is almost similar to violet and in some instances, people use them interchangeably. However, purple is importantly more of red than blue, of which reverse is the case for violet.

Meanwhile, the purple blue color gives a deeper shade of blue and is achieved when red and blue alone are mixed. Sometimes, to achieve the regular purple color, artists and designers mix magenta with red or blue. This is effective because magenta is already a purplish-red or reddish-purple color.

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The purple blue color sometimes appears in mountains because of something called aerial perspective or atmospheric perspective. This occurs when a person is viewing a mountain from a far distance and the human eye starts to detect less difference between the mountain and the sky.

Tropical color palette

A typical tropical color palette contains colors such as turquoise, tangerine, canary yellow, aqua, fuchsia, coral, and indigo. There is even a color called tropical indigo and it has the traditional name of añil in the Guide to colorations by Rosa Gallego and Juan Carlos Sanz, a color dictionary published in 2005.

Additionally, the tropical Indigo plant (Indigofera) is used in the making of indigo dye, a greenish dark blue color.

Conclusion

Indigo has come from the brink of extinction to taking its rightful place as a color that has the right to exists among other colors. It makes up the popular seven colors of the rainbow and in times past, has been used to represent royalty, wealth, prestige and holiness in different religions.

As a mixture of red and blue, the color is closely related to other products of this combination such as violet and purple. It is not surprising that indigo, violet and purple are mistaken for one or the other by many. Indigo is a unique color that adds beauty to anything that it touches.

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Obinna
Obinna is a fiction writer from Lagos, Nigeria, and grew up loving comic book characters and superheroes. He watches lots of action films and writes entertainment and technology articles. He is also interested in science and how things work.

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