Iron oxide red: Difference between revisions

Deep Indian Red
Deep Indian Red
Color coordinates
Hex triplet	#B94E48
sRGBB (r, g, b)	(185, 78, 72)
HSV (h, s, v)	(3°, 61%, 73%)
CIELChuv (L, C, h)	(47, 83, 14°)
Source	Crayola
ISCC–NBS descriptor	Dark reddish orange
	B: Normalized to [0–255] (byte);

Venetian Red
Venetian Red
Color coordinates
Hex triplet	#C80815
sRGBB (r, g, b)	(200, 8, 21)
HSV (h, s, v)	(356°, 96%, 78%)
CIELChuv (L, C, h)	(42, 136, 12°)
Source	Internet
ISCC–NBS descriptor	Vivid red
	B: Normalized to [0–255] (byte);

Indian Red
Indian Red
Color coordinates
Hex triplet	#CD5C5C
sRGBB (r, g, b)	(205, 92, 92)
HSV (h, s, v)	(0°, 55%, 80%)
CIELChuv (L, C, h)	(53, 85, 12°)
Source	X11
ISCC–NBS descriptor	Moderate red
	B: Normalized to [0–255] (byte);

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Indian red is a pigment, a variety of ocher, which gets its colour from ferric oxide, used to be sourced in India,^[1] now made artificially.^[2] 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.^[3]

Variations of Indian red

Venetian red

At right is displayed the colour Venetian red.

Venetian red is a light and warm (somewhat unsaturated) pigment that is a darker shade of scarlet, derived from nearly pure 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.^[4]

Deep Indian red

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

English red

English Red

Color coordinates
Hex triplet	#AB4E52
sRGB^B (r, g, b)	(171, 78, 82)
HSV (h, s, v)	(357°, 54%, 67%)
CIELCh_uv (L, C, h)	(45, 67, 10°)
Source	ISCC-NBS
ISCC–NBS descriptor	Moderate 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).^[6] In the Encyclopédie of Denis Diderot in 1765, alternate names for Indian red included "what one also calls, however improperly, English Red."^[7]

Kobe

Kobe

Color coordinates
Hex triplet	#882D17
sRGB^B (r, g, b)	(136, 45, 23)
HSV (h, s, v)	(12°, 83%, 53%)
CIELCh_uv (L, C, h)	(32, 73, 18°)
Source	ISCC-NBS
ISCC–NBS descriptor	Strong 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.^[8]

The normalized colour coordinates for Kobe are identical to sienna, first recorded as a colour name in English in 1760.^[9]

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.^[10]
Furness Railway Nº20, as restored today

The Furness Railway in the UK used Indian Red for its locomotive livery.
The Department of Railways New South Wales, Public Transport Commission and the State Rail Authority painted their diesel locos and passengers cars in Indian red.

References

^ Church, Arthur Herbert (1915). The Chemistry of Paints and Painting (4th ed.). London: Seeley, Service & Co. pp. 202–203. OCLC 1041775719. OL 7214282M.
^ Gettens & Stout 1966a.
^ "Indian, adj. and n. : Oxford English Dictionary". Retrieved 4 July 2020.
^ 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
^ Crayon Chronology
^ 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
^ 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.
^ 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
^ 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
^ "Steam trains secret 150th paint job". BBC News. 2015-01-08. Retrieved 2020-06-07.

Sources

Gettens, R. J.; Stout, G. L. (1966a). "Indian Red". Painting Materials: A Short Encyclopedia. Courier Corporation. p. 119. ISBN 978-0-486-14242-5. OCLC 868969354.
Gettens, R. J.; Stout, G. L. (1966b). "Iron Oxide Red". Painting Materials: A Short Encyclopedia. Courier Corporation. p. 122. ISBN 978-0-486-14242-5. OCLC 868969354.

[1] Church, Arthur Herbert (1915). The Chemistry of Paints and Painting (4th ed.). London: Seeley, Service & Co. pp. 202–203. OCLC 1041775719. OL 7214282M.

[FOOTNOTEGettensStout1966a-2] Gettens & Stout 1966a.

[3] "Indian, adj. and n. : Oxford English Dictionary". Retrieved 4 July 2020.

[4] 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

[5] Crayon Chronology

[6] 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

[7] 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.

[8] 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

[9] 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

[10] "Steam trains secret 150th paint job". BBC News. 2015-01-08. Retrieved 2020-06-07.

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