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Principles of Decorative Design Part 5

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Care, and a little practice, will enable the learner to arrange colours into a number of degrees of depth, or shades, as they are generally called. (We do not here use the term as signifying pure colours darkened with black.) Ten shades of each colour differing obviously in degree of depth can readily be arranged by the experienced, the ten shades being equidistant from each other as regards depth--that is, shade 3 will be as much darker than shade 2 as shade 2 is darker than shade 1, and so on throughout the whole. Purple is a colour intermediate between blue and red. Imagine ten hues between the purple and the red, and ten more between the purple and the blue: thus we should have purple, then a slightly red purple, then a rather redder purple, then a purple still redder, and so on till we get purple-reds, and finally the pure red; and the same variations of hue at the blue side also. Imagine, further, the green having ten hues extending towards the blue, and ten more stretching towards the yellow; and the orange having ten hues towards the red, and ten towards the yellow--in all cases I count the colour from which we start as one of the ten, thus:--

Blue Purple Red 0 9 8 7 6 5 4 3 2 1 2 3 4 5 6 7 8 9 0

--and we shall have 54 colours and hues of colour. Of each of these 54 colours and hues imagine 10 degrees of depth, and we get 540 colours, hues, tints, and shades, all differing from one another to an obvious degree.

Mark this fact, that any colour, tint, hue, or shade of such a diagram has its complement in one other of the colours, tints, hues, or shades of the diagram, and that only two of this series of 540 are complementary to each other; thus, if you fix on any one colour of the 540, there is but one colour in the whole that is complementary to it, and it is complementary to but this one other colour.

The student will do well to try and make a colour-diagram of this kind, of a simple character, say such as the following, only using pigments for my numbers; but in doing so he must exercise the utmost care, in order that he secure some degree of accuracy of tint or shade, and if he can call to his aid an experienced colourist it will be of great a.s.sistance to him.

[Ill.u.s.tration]

This table is highly valuable, as it gives ninety harmonies, if carefully prepared in colour; and the preparation of such a table is the very best practice that a student can possibly have.

Let us for a moment consider this table, and suppose that we want to find the complement to some particular colour, as the third shade of red. We find the complement of this in the third shade of green opposite. If we want the complement of the second shade of orange-yellow, we find it in the second shade of blue-purple opposite, and so on. Thus we have a means of at once judging of the harmony of colours.

It must ever be borne in mind that pigments mixed in the proportions given will not yield results such as would occur when the coloured rays of light are combined; thus three parts, either by weight or measure, of chrome yellow when combined with eight parts of ultramarine would not form a colour representing the secondary green, nor would the result be more satisfactory were other pigments combined in the proportions given. What we have said in respect to the proportions in which colours combine to form new colours applies only to the coloured rays of light.

It must now be noticed that while colours harmonise in the proportions stated, the areas occupied by the different colours may vary if there be a corresponding alteration in intensity. Thus eight of blue and eight of orange form a perfect harmony when both colours are of prismatic intensity; but we shall still have a perfect harmony if the orange is diluted to one-half its strength with white, and thus formed into a tint, provided there be sixteen parts of this orange of half strength to the eight parts of blue of full strength.

The orange might be further diluted to one-third of its full power, but then twenty-four parts would be necessary to a perfect harmony with eight parts of prismatic blue; or to one-fourth of its strength, when thirty-two parts would be necessary to the harmony.

It is not desirable that I occupy s.p.a.ce with diagrams of these quant.i.ties, but the industrious student will prepare them for himself, and will strive to realise a true half-tint, quarter-tint, etc., which is not a very easy thing to do. By practice, however, it will readily be accomplished, and anything achieved is a new power gained.

What I have said respecting the harmony of blue with tints of orange will apply in all similar cases. Thus red will harmonise with tints of green, provided the area of the tint be increased as the intensity is decreased; and so will yellow harmonise with tints of purple under similar conditions.

But we may reverse the conditions, and lower the primary to a tint retaining the secondary in its intensity. Thus blue, if reduced to a half-tint, will harmonise with orange of prismatic intensity in the proportion of sixteen of blue to eight of orange; or, if reduced to a quarter-tint, in the proportion o thirty-two of blue to eight of orange. Red, if reduced to a half-tint, will harmonise in the proportion of ten red to eleven of green; and yellow as a half-tint in the proportion of six yellow to thirteen of purple.

The same remarks might be made respecting the harmony of shades of colour with colours of prismatic intensity. Thus, if orange is diluted to a shade of half intensity with black, it will harmonise with pure blue in the proportion of sixteen of orange to eight of blue, and so on, just as in the case of tints; and this principle applies to the harmony of all hues of colour also.

To go one step further: we scarcely ever deal with pure colours or their shades or tints, or even come as near them as we can. With great intensity of colour we seem to require an ethereal character, such as we have in those of light; but our pigments are coa.r.s.e and earthy--they are too real-looking, and are not ethereal--they may be said to be corporeal rather than spiritual in character. For this reason we have to avoid the use of our purest pigments in such quant.i.ties as render their poverty of nature manifest, and to use for large surfaces such tints as, through their subtlety of composition, interest and please. A tint the composition of which is not apparent is always preferable to one of more obvious formation. Thus we are led to use tints which are subtly formed, and such as please by their newness and bewilder by the intricacy of formation.

To do what I here mean it is not necessary that many pigments be mixed together in order to the formation of a tint. The effect of which I speak can frequently be got by two well-chosen pigments. Thus a fine series of low-toned shades can be produced by mixing together middle-chrome and brown-lake in various proportions, and in all of the shades thus formed the three primary colours will be represented, but in some yellow will predominate, and in others red; while in many it will not be easy to discover to what proportionate extent the three primary colours are present.

Let us suppose that we make a tint by adding white to cobalt blue.

This blue contains a small amount of yellow, and is a slightly green blue. But to this tint we add a small amount of raw umber with the view of imparting a greyness[15] or atmospheric character. Raw umber is a neutral colour, leaning slightly to yellow--that is, it consists of red, blue, and yellow, with a slight excess of the latter. In order that an orange harmonise with this grey-blue of a slightly yellow tone, the orange must be slightly inclined to red, so as to form the complement of the little green formed by the yellow in the blue. It may harmonise with the grey-blue as a pure tint if the area of the diluted and neutralised primary is sufficiently extended, or may itself be likewise reduced to a tint of the same depth, when both tints would have the same area.

[15] Cobalt, raw umber, and white make a magnificent grey, both in oil-colours, in tempera (powder-colours mixed with gum-water), and in distemper (powder-colours mixed with size).

I might go on multiplying cases of this character to almost any extent, but these I leave the student to work out for himself, and pa.s.s to notice that while it is desirable to use subtle tints (often called "broken tints") it is rarely expedient to make up the full harmony by a large area of a tertiary tone and a single positive colour. Thus, we might have a shade or a tint of citrine spreading over a large surface as a ground on which we wished to place a figure.

This figure would harmonise in pure purple were it of a certain size, and yet if thus coloured it would give a somewhat common-place effect when finished, for the harmony would be too simple and obvious. It would be much better to have the nineteen parts of citrine reduced, say, to half intensity, when the area would be increased to thirty-eight, with the figure of eight parts of blue and five of red, than of thirteen parts of purple.

But it would be better still if there were the thirty-eight parts of reduced citrine, three parts of pure yellow, thirteen of purple, five of red, and eight of blue, together with white, black, or gold, or all three (these may be added without altering the conditions, as all act as neutrals), for here the harmony is of a more subtle character.

If we count up the equivalents of the colours employed in this scheme of harmony, we shall see that we have, in the citrine--

Yellow 6 (two equivalents).

Blue 8 (one equivalent).

Red 5 (one equivalent).

In the purple--

Blue 8 (one equivalent).

Red 5 (one equivalent).

Of the pure colours--

Yellow 3 (one equivalent).

Red 5 (one equivalent).

Blue 8 (one equivalent).

Thus we have three equivalents of each primary, which give a perfect harmony.

I must not say more respecting the laws of harmony, for in the s.p.a.ce of a small work it is impossible to do so, but proceed to notice certain effects or properties of colours, which I have as yet only alluded to, or have pa.s.sed altogether unnoticed.

I have said that black, white, and gold are neutral as regards colour.

This is the case, although many would suppose that gold was a yellow.

Gold will act as a yellow, but it is generally employed as a neutral in decorative work, and it is more of a neutral than a yellow, for both red and blue exist largely in it. The pictorial artist frames his picture with gold because it, being a neutral, does not interfere with the tints of his work. It has the further advantage of being rich and costly in appearance, and thus of giving an impression of worth where it exists.

Black, white, and gold, being neutral, may be advantageously employed to separate colours where separation is necessary or desirable.

Yellow and purple harmonise, but yellow is a light colour and purple is dark. These colours not only harmonise, but also contrast as to depth, the one being light and the other dark. The limit of each colour, wherever these are used in juxtaposition, is therefore obvious.

It is not so with red and green, for these harmonise when of the same depth. This being the case, and red being a glowing colour, if a red object is placed on a green ground, or a green object on a red ground, the "figure" and ground will appear to "swim" together, and will produce a dazzling effect. Colour must a.s.sist form, and not confuse it. It will do this in the instance just named if the figure is outlined with black, white, or gold, and there will be no loss of harmony. But experience has shown that this effect can also be averted by outlining the figure with a lighter tint of its own colour. Thus, if the figure is red and the ground green, an outline of lighter red (pink) may be employed. (See Proposition 26, page 34.)

A blue figure on a red ground (as ultramarine on carmine), or a red figure on a blue ground, will also produce this swimming and unsatisfactory effect, but this is again obviated by an outline of black, white, or gold.

Employing the outline thus must not be regarded as a means of merely rendering what was actually unpleasant endurable, for it does much more--it affords one of the richest means of effect. A carmine ground well covered with bold green ornament having a gold outline is, if well managed, truly gorgeous; and were the figure blue on the red ground, the lavish use of gold would render the employment of yellow unnecessary as the yellow formed in the eye and cast upon the gold would satisfy all requirements.

It is a curious fact that the eye will create any colour of which there is a deficiency. This it will do, but the colour so created is of little use to the composition unless white or gold is present; if, however, there be white or gold in the composition, the colour which is absent, or is insufficiently represented, will be formed in the eye and cast upon these neutrals, and the white or the gold, as the case may be, will a.s.sume the tint of the deficient or absent colour. (See Propositions 8 and 9, page 32.)

While this occurs (and sometimes it occurs to a marked degree, as can be shown by experiment), it must not be supposed that a composition in which any element is wanting is as perfect as one which reveals no want. It is far otherwise; only Nature here comes to our a.s.sistance, and is content to help herself rather than endure our short-comings; but in the one case we give Nature the labour of completing the harmony; while in the other, all being prepared, we receive a sense of satisfaction and repose.

In Proposition 8 we showed that when blue and black are juxtaposed, the black becomes "rusty," or a.s.sumes an orange tint; and in Proposition 9 we gave the cause of this effect. Let a blue spot be placed on a black silk necktie, and however black the silk, it will yet appear rusty. This is a fact; but we sometimes desire to employ blue on black, and wish the black to look black, and not an orange-black. How can we do this? Obviously by subst.i.tuting for the black a very dark blue, as indigo. The bright blue spot induces orange (the complement of blue) in the eye. This orange, when cast upon black, causes the latter to look "rusty;" but if we place in the black an amount of blue sufficient to neutralise the orange cast upon it, the effect will be that of a jet-black.

We have now considered those qualities of colour, and those laws of contrast and harmony, which may be said to be of the grosser sort; but we have scarcely touched on those considerations which pertain to special refinement or tenderness of effect. But let me close the part of my subject of which I have treated, by repeating a statement already made--a statement, let me say, which first led me to perceive really harmony of colour--that _those colours, and those particular hues of colour, which improve each other to the utmost, are those which perfectly harmonise_. (Consider this statement in connection with Propositions 8, 9, 10, and 14, pages 32 and 33.)

We come now to consider delicacies and refinements in colour effects, which, although dependent upon the skilful exercise of the laws enunciated, are yet of a character, the power to produce which only results from the consideration of the works of the masters of great art-nations; but of these effects I can say little beyond pointing out what should be studied.

This principle however I cannot pa.s.s without notice--namely, that the finest colour effects are those of a rich, mingled, bloomy character.

Imagine a luxuriant garden, the beds in which are filled with a thousand flowers, having all the colours of the rainbow, and imagine these arranged as closely together as will permit of their growth.

When viewed from a distance the effect is soft and rich, and full and varied, and is all that is pleasant. This is Nature's colouring. It is our work humbly to strive at producing like beauty with her.

This leads me to notice that primary colours (and secondary colours, also, when of great intensity) should be used chiefly in small ma.s.ses, together with gold, white, or black.

Visit the Indian Museum at Whitehall,[16] and consider the beautiful Indian shawls and scarves and table-covers; or, if unable to do so, look in the windows of our large drapers in the chief towns, and see the true Indian fabrics,[17] and observe the manner in which small portions of intense reds, blues, yellows, greens, and a score of tertiary tints, are combined with white and black and gold to produce a very miracle of bloom. I know of nothing in the way of colour combination so rich, so beautiful, so gorgeous, and yet so soft, as some of these Indian shawls.

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Principles of Decorative Design Part 5 summary

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