360 A DICTIONARY OF COLOUR
n simple colours
The colours blue, red and yellow were, according to the chemist and philosopher
Robert Boyle (1627-1691) and the artist Christof le Blon (1670-1741), the three
‘simple ‘ colours. It was le Blon who considered that all colours could be derived
from this triad and who first made the vital distinction between coloured light
and pigment colour. See subtractive process and also essential colours.
n simultaneous contrast
The phenomenon occurring when certain colours (particularly complementary
colours) juxtaposed in certain conditions (for example, in small uniform patches)
produce the appearance of another colour or cause each other to be intensified.
c sinoper, sinople, sinopia, sinopite, sinope, sinopis, sinopic
An ancient light red ochre or earth used as a pigment originating from the
Black Sea city in Paphlagonia, Greece (but now in Turkey) known as Sinop. Sinop
has had many names including Sinopë and Sinopis by which the earth also
became to be known. ‘Sinoper’ by extension was used to indicate the colour
red, however, such is the inconstancy of ancient colourwords that sinople until
the 15th century also referred to the colour green – particularly in heraldry. The
Greeks painted their ships in many colours including in particular sinopic red.
Sinopia also means the initial rough sketch (using the reddish brown colour of
sinoper) used to prepare frescoes. Sometimes also referred to as cinnabar. See
also miltos and Venetian red.
c sinople green
A shade of green particularly in heraldry but see previous entry.
n size
A dilute solution applied to prime canvasses, panels and other supports to inhibit
the absorption of paint or oil. Also used as a medium in watercolour painting.
n sketch
An outline drawing.
c skewbald
Describing horses coloured with patches of white and some other colour, but
not black – a horse with white and black patches being described as piebald.