Iron oxide red

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Indian red
)

Iron oxide red is a generic name of a

Spanish red with 85% of oxide, Tuscan red. [1]

Properties

The anhydrous pigment has a dark purple-red or

yellow ochre) to warm red.[1]

The iron oxide red is extremely stable: it is not affected by light and most chemicals (

soluble in hot concentrated acids); heat only affects the hydrated variants (the water is removed, and the color darkens).[1]

Indian red

Indian Red
 
CIELChuv (L, C, h)
(53, 85, 12°)
SourceX11
ISCC–NBS descriptorModerate red
B: Normalized to [0–255] (byte)

Indian red is a

ferric oxide, used to be sourced in India,[2] now made artificially.[3] Other shades of iron oxides include Venetian Red, English Red, and Kobe
, all shown below.

Chestnut is a colour similar to but separate and distinct from Indian red.

Etymology

The name Indian red derives from the red laterite soil found in India, which is composed of naturally occurring iron oxides.[citation needed] The first recorded use of Indian red as a color term in English was in 1672.[4]

Deep Indian red

Deep Indian Red
 
CIELChuv (L, C, h)
(47, 83, 14°)
SourceCrayola
ISCC–NBS descriptorDark reddish orange
B: Normalized to [0–255] (byte)

Deep Indian red is the colour originally called Indian red from its formulation in 1903 until 1999, but now called chestnut, in Crayola crayons. This colour was also produced in a special limited edition in which it was called Vermont maple syrup.

At the request of educators worried that children (mistakenly; see

skin color of Native Americans, Crayola changed the name of their crayon color Indian Red to Chestnut in 1999.[5]

Indian red in culture

Railroads/Railways
  • The Talyllyn Railway painted their locomotives Talyllyn and Dolgoch Indian Red in honour of the 150th anniversary of the line in 2015.[6]
    Furness Railway Nº20, as restored today

Venetian red

Venetian Red
 
CIELChuv (L, C, h)
(42, 136, 12°)
SourceInternet
ISCC–NBS descriptorVivid red
B: Normalized to [0–255] (byte)

At right is displayed the colour Venetian red.

Venetian red is a light and warm (somewhat unsaturated) pigment that is a darker shade of

ferric oxide (Fe2O3) of the hematite
type. Modern versions are frequently made with synthetic red iron oxide.

The first recorded use of Venetian red as a colour name in English was in 1753.[7]


English red

English Red
 
CIELChuv (L, C, h)
(45, 67, 10°)
SourceISCC-NBS
ISCC–NBS descriptorModerate red
B: Normalized to [0–255] (byte)

At right is displayed the colour English red.

This red is a tone of Indian red, made like Indian red with pigment made from iron oxide.

The first recorded use of English red as a colour name in English was in the 1700s (exact year uncertain).[8] In the Encyclopédie of Denis Diderot in 1765, alternate names for Indian red included "what one also calls, however improperly, English Red."[9]

Kobe

Kobe
 
CIELChuv (L, C, h)
(32, 73, 18°)
SourceISCC-NBS
ISCC–NBS descriptorStrong reddish brown
B: Normalized to [0–255] (byte)

At right is displayed colour kobe.

The colour kobe is a dark tone of Indian red, made like Indian red from iron oxide pigment.

The first recorded use of Kobe as a colour name in English was in 1924.[10]

The normalized colour coordinates for Kobe are identical to sienna, first recorded as a colour name in English in 1760.[11]


See also

References

  1. ^ a b c Gettens & Stout 1966b.
  2. .
  3. ^ Gettens & Stout 1966a.
  4. ^ "Indian, adj. and n. : Oxford English Dictionary". Retrieved 4 July 2020.
  5. ^ Crayon Chronology
  6. ^ "Steam trains secret 150th paint job". BBC News. 2015-01-08. Retrieved 2020-06-07.
  7. ^ Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill p. 201; Color sample of Venetian red: p. 35 Plate 6 color sample I12
  8. ^ Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill p. 194; Color sample of English red: p. 31 Plate 4 color sample H12
  9. ^ Jaucourt, Louis, chevalier de. "Indian Red." The Encyclopedia of Diderot & d'Alembert Collaborative Translation Project. Translated by Abigail Wendler Bainbridge. Ann Arbor: Michigan Publishing, University of Michigan Library, 2013. Web. 1 Apr. 2015, <http://hdl.handle.net/2027/spo.did2222.0003.009>. Trans. of "Rouge d'Inde," Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers, vol. 14. Paris, 1765.
  10. ^ Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill p. 197; Color sample of Kobe: p. 35 Plate 6 color sample K12
  11. ^ Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill p. 204; Color Sample of Sienna: p. 37 Plate 7 Color Sample E12

Sources