It will be found that chords 1, 3, and 5 have three of their five colors in common, so they are a related chord group. The other row comprising, 2, 4, and 6, are also a related chord group. The last or seventh chord is related by two colors to both groups, and can be used with either of them.

In applying these chord groups to the decoration of rooms which open on a common foyer or in rooms which afford vistas of one another, in order to secure a harmony characteristic of the key they should be used in related groups dependent upon the number of rooms. For suites of three rooms, the first three chords of either group are available; for a fourth room the seventh chord can be added to either group; and for more than four, additional chords from the alternative group can be supplemented.

I. The Seven Chords Of The Key Of Red

RELATED CHORD GROUP I

1

Red.

Yellow orange. Green-blue green.

2

Red orange. Yellow-yellow green. Blue violet.

RELATED CHORD GROUP II

3 Yellow orange.

Green-blue green.

Violet red.

4 Yellow-yellow green.

Blue violet.

Red.

5 Green-blue green.

Violet red.

Red orange.

6 Blue violet. Red.

Yellow orange.

7

Violet red. Red orange. Yellow-yellow green

The same groups of chords will be found to be related in all keys, and the same principles of use hold good for all.

II. The Seven Chords Of The Key Of Red Orange

Red orange. Green-yellow green. Blue violet.

Yellow orange. Green-blue green. Violet red.

3 Green-yellow green.

Blue violet.

Red-red orange.

4 Green-blue green.

Violet red.

Red orange.

Blue violet. Red-red orange. Yellow orange.

6 Violet red. Red orange. Green-yellow green.

7 Red orange.

Yellow green.

Blue.

III. The Seven Chords Of The Key Of Orange

1 Orange. Blue green. Violet.

Yellow green.

Blue.

Red.

3 Blue green.

Violet.

Red orange.

4 Blue.

Red.

Orange.

Violet. Red orange. Yellow green.

6 Red.

Orange. Blue green.

7 Red orange.

Yellow green.

Blue.

IV. The Seven Chords Of The Key Of Yellow

1 Yellow.

Blue-blue violet. Red.

Green-blue green. Violet-blue violet. Red orange.

3 Blue-blue violet.

Red.

Orange-yellow orange.

4 Violet-blue violet.

Red orange.

Yellow.

5 Red

Orange-yellow orange.

Green-blue green.

6 Red orange. Yellow. Blue-blue violet.

7 Orange-yellow orange.

Green-blue green.

Violet-blue violet.

V. The Seven Chords Of The Key Of Yellow Green

1 Yellow green. Violet-blue violet. Red.

Blue green. Violet. Red orange.

Violet-blue violet.

Red.

Yellow-orange yellow.

4 Violet

Red orange.

Yellow green.

5 Red.

Yellow-orange yellow.

Blue green.

6 Red orange. Yellow green. Violet-blue violet.

7 Yellow-orange yellow.

Blue green.

Violet.

VI. The Seven Chords Of The Key Of Green

Green. Violet. Red-red orange.

Blue.

Violet red. Orange.

3 Violet.

Red-red orange.

Yellow green.

4 Violet red.

Orange.

Green.

5 Red-red orange.

Yellow green.

Green.

6 Orange. Green. Violet.

7 Yellow green.

Blue.

Violet red.

VII. The Seven Chords Of The Key Of Blue Green

1 Blue green. Violet red. Red orange.

Violet-blue violet.

Red.

Yellow-orange yellow.

3 Violet red.

Red orange.

Green.

4 Red.

Ycllow-orangc yellow.

Blue green.

5 Red orange.

Green.

Violet-blue violet.

6 Yellow-orange yellow. Blue green. Violet red.

7 Green.

Violet-blue violet.

Red.

VIII. The Seven Chords Of The Key Of Blue

Blue.

Red

Orange.

Violet.

Red-red orange. Yellow green.

3 Red.

Orange.

Blue green.

4 Red-red orange.

Yellow green.

Blue.

5 Orange.

Blue green.

Violet.

6. Yellow green. Blue. Red.

7 Blue green. Violet. Red-red orange.

IX. The Seven Chords Of The Key Of Violet

Violet-Red orange. Yellow-yellow green.

Red.

Orange-red orange. Green-blue green.

3 Red orange. Yellow-yellow green. Blue violet.

4 Orange-red orange. Green-blue green. Violet.

5 Yellow-yellow green. Blue violet. Red.

Green-blue green.

Violet.

Red orange.

7 Blue violet. Red. Orange-red orange.

Let us now take two keys which are characteristically different and work out color schemes for interiors from them. The key of red orange and that of blue green offer a good contrast; red orange being a strong aggressive color, and blue green a cool and retiring one. We will use Related Chord Group I in the red orange key, and Related Chord Group II in the blue green key for the sake of variation. The group of rooms will consist of Hall, Living-room, Library, and Dining-room.

Color Harmony For A Group Of Related Rooms In Key Of Red Orange

Hall (chord l)

Walls.

Red orange.

Woodwork.

Antique oak stain touched with blue violet.

Hangings.

Green-yellow green.

Furniture.

Antique oak with dull wood finish.

Upholstery.

Blue violet.

Floor-covering.

Brown orange or dull red orange.

Living-room (chord 3)

Walls.

Green-yellow green.

Woodwork

Antique oak stain touched with red orange and green-yellow green.

Hangings.

Figured material with either blue violet, red, red orange, or yellow green in predominance.

Furniture.

Antique oak with dull wood finish.

Upholstery.

Figured material same as hangings alternated with a few pieces in red orange or blue violet.

Floor-covering.

Blue violet.

Library (chord 7)

Walls.

Blue green.

Woodwork.

Antique oak stain touched with yellow orange. Yellow orange.

Hangings.

Antique oak with dull wood finish.

Furniture.

Red-red orange.

Upholstery. Floor-covering.

Blue green with red orange and yellow orange border.

Dining-room (chord 5)

Walls.

Yellow orange.

Woodwork.

Antique oak stain.

Hangings.

Figured material with red-red orange or blue violet in predominance.

Furniture.

Antique oak with dull wood finish-

Upholstery.

Blue violet.

Floor-covering.

•

Dull red-red orange.

Color Harmony For A Group Of Related Rooms In Key Of Blue Green

Hall (chord 2)

Walls.

Gray.

Woodwork.

Gray with stripe of blue violet.

Hangings.

Red.

Furniture.

Gray.

Upholstery.

Red.

Floor-covering.

Dark gray.

(The third color, yellow-orange yellow, can be introduced in the electric lighting fixture shades or in a single lamp-shade.)

Living-room (chord 6)

Walls.

Gray.

Woodwork.

Gray.

Hangings.

Gray with an appliqued stripe of blue green.

Furniture.

Violet red alternated with black, or gray touched with violet red.

Upholstery.

Violet red on black or gray furniture or black on violet red furniture.

Floor-covering.

Black.

(The third color, yellow-orange yellow, can be introduced in the lamp shades which can be picked out with blue green. One or two pieces of blue green pottery will also be effective.)

Library (chord 7)

A

Walls.

Gray.

Woodwork.

Gray with a stripe of blue violet.

Hangings.

Green.

Furniture.

Black.

Upholstery.

Red.

Floor-covering.

Dull red with a green border.

Dining-room (chord 4)

Walls.

Gray.

Woodwork.

Gray with a stripe of red.

Hangings.

Blue green with a dull red border.

Furniture.

Yellow-orange yellow.

Upholstery.

Blue green and yellow, striped or figured.

Floor-covering.

Blue green with dull red border.

Any of the seven colors which appear in the seven chords of the key can be used together, but in furnishing single or related rooms it is better to choose a chord or chord group, because warm and cool colors are automatically distributed. The other colors of the key can, when necessary, be introduced in the little touches. The use of the chord groups also is helpful in establishing a unified color impression or tone, just as the chords establish the key in music. The general impression of a color harmony based on the related chord groups of the key will be found to preserve generally the dominant characteristics of the key-color. The two schemes cited above are merely suggestive. For the person who wishes to go further into the use of color than one is able to without some suggestive basis, these few deductions from the chart will form the nucleus for an infinity of interesting and stimulating developments.