210 A DICTIONARY OF COLOUR
n Indian ink, India ink
Ink which originated in China but was produced from a pigment (lampblack,
carbon black or bone black) made in India.
c Indian orange
A vivid reddish-orange colour.
c Indian red
A dark brownish red originally made from iron oxide. See Venetian red.
c IndianRed
One of the 140 colours in the X11 Color Set. It has hex code #CD5C5C.
c Indian yellow
A vivid golden yellow pigment known in India for many years but now
synthetically produced. It was originally made from earth on which mangoleaf-
eating cows or camels had urinated over many weeks. Since mango leaves give
insufficient nourishment, the export of Indian yellow was banned to avoid cruelty
to animals and by the beginning of the 20th century it had ceased to exist. Also
referred to as purree, puri, peoli and gaugoli.
c indigo
The blue shades between approximately 445 and 425 nanometres; the blue derived
from the dye indigo and ubiquitous since the advent of blue jeans in the 1950’s.
c Indigo
One of the 140 colours in the X11 Color Set. It has hex code #4B0082.
n indigo
A natural blue dye from the leaves of various plants of the Indigofera family and
sometimes including woad. ‘Indigo’ derives from indikos – the Greek for India.
Synthetic indigo was developed from around 1856 having a severe impact on
the indigo fields of India and its 2800 indigo factories existing in the 1870’s even
though mass production did not take place until the end of the 19th century. Indigo
was not produced in England until 1916 when the forerunner to ICI started
production. When first brought to the British isles it was called ‘indico’.
c indigo blue
A dark sometimes purplish blue; also the name of the dye.