198. If the binary combinations of black be examined in this point of view, it will be seen that the deep tones of all the scales, and even of the blue and violet scales (which are not, properly speaking, deep), form with it harmonies of analogy and not of contrast. So likewise do the unbroken tones of the _red, orange, yellow-green_ scales, and the very light tones of the violet and blue scale. We may add, according to what has been said (55), that the combinations of _black_ with sombre colours, such as _blue_ and _violet_, whose complementaries, orange and _greenish-yellow_, are luminous, may diminish the contrast of tone if the colours be juxtaposed with _black_ or one not far from it, and in this case the _black_ loses much of its vigour. 199. _Blue_ and _Black, Violet_ and _Black_, make combinations which may be employed successfully when only dark colours are required. The first is superior to the second. 200. Light combinations which exhibit the harmonies of contrast, appear to me in the order of beauty thus:— _Red_ or _Rose_ and _Black_, _Orange_ and _Black, Yellow_ and _Black_, lastly, _Bright Green_ and _Black_. As to yellow, I repeat that it must be brilliant and intense, inasmuch as black tends to impoverish its tone. B.—_Ternary Combinations of Colours mutually Complementary with Black._ 201. 1. _Red, Green_, &c. 2. _Black, Red, Green, Black_, &c. This arrangement being quite different from the former, it is difficult to decide respecting their comparative beauty. 3. _Black, Red, Black, Green, Black_, &c., appear to me inferior to the preceding, because there is too much black. 202. 1. _Blue, Orange_, &c. 2. _Black, Blue, Orange, Black_. I prefer the first to the second; the proportion of dark colour being too strong relatively to the _orange_. 3. _Black, Blue, Black, Orange, Black_, &c. This pleases me less than the first. The effect of _black_ with _blue_ and _orange_ is inferior to that of _white_. 203. 1. _Yellow, Violet_, &c. 2. _Black, Yellow, Violet_, &c. 3. _Black, Yellow, Black, Violet, Black_, &c. The second is superior to the third, because the proportion of sombre colours with the _yellow_ is too strong in the latter. The first appears to me superior to the second. C.—_Ternary Combinations of Colours not Complementary with Black._ 204. 1. _Red, Orange_, &c. 2. _Black, Red, Orange, Black_, &c. 3. _Black, Red, Black, Orange, Black_, &c. As orange and red injure each other, there is an advantage in separating them by black. The third arrangement is preferable to the second; and both are preferable to those in which _black_ is replaced by _white_.