Purple Being A Secondary Colour Composed Of Blue And Red It





follows of course that any blue and red pigments, which are not

chemically at variance, may be employed in producing mixed purples of

any required hue, either by compounding or grinding them together ready

for use, or by combining them in the various modes of operation in

painting. In such compounding, the more perfect and permanent the

original colours are, the more perfect and permanent will be the purple

obtained. To produce a pure purple, neither the red nor the blue must

contain or incline to yellow; while to compound a durable purple, both

the red and the blue must be durable also. Ultramarine and the reds of

madder yield beautiful and excellent purples, equally stable in water or

oil, in glazing or tint, whether under the influence of light or impure

air. Cobalt blue and madder red likewise afford good purples; and some

of the finest and most delicate purples in ancient paintings appear to

have been composed of ultramarine and vermilion, which furnish tints

equally permanent, but less transparent than the above, and less easily

compounded. Facility of use, and other advantages, are obtained at too

great a sacrifice by the employment of perishable mixtures, such as the

lakes of cochineal with indigo.



PERMANENT REDS. PERMANENT BLUES.



Cadmium Red. Cerulian Blue.

Liquid Rubiate. Cobalt Blue.

Madder Carmine. Genuine Ultramarine.

Rose Madder. Brilliant Ultramarine.

Mars Red. French Ultramarine.

Ochres. New Blue.

Vermilions. Permanent Blue.



It should be noted that all the above reds do not afford pure purples

with blue; those which contain more or less yellow, as cadmium red and

orange vermilion, furnish purples partaking more or less of olive, which

is a compound of purple and green. To those reds may be added the russet

Rubens Madder and the marrone Madder Brown, two pigments which are alike

eligible for mixed purple and mixed orange. No purple, it will be

remarked, equal in gorgeous richness to that produced from crimson lake

and Prussian blue is obtainable from the colours given; just as no mixed

green is of such depth and power if that blue be wanting as a

constituent. But, as our compound tints are given rather as examples of

durability than beauty, all semi-stable or fugitive mixtures are of

necessity ignored.



TTITLE PURPLE MADDER,





Proportions Of Thirteen Purple To Three Yellow Measured In Surface Quoque facebooktwittergoogle_plusredditpinterestlinkedinmail

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