HUES
Rule 12f. Color schemes for wood work and side walls should preferably be selected from one of the following groupings: analogous, contrasted, or dominant arrangements of hues. Analogous grouping is preferable where variety of hue is desirable.
Rule 12g. Ceilings should be colored by a lighter tint of the side walls or by a lighter tint of an analogous hue.
CHROMA
Rule 12h. Stains are usually not reduced to below three-fourths chromatic intensity. Nearly gray side walls, however, call for a reduction to one-fourth intensity.
Rule 12i. Wall colors are usually reduced to three-fourths chroma to a minimum reduction of slightly less than one-fourth chroma.
Rule 12j. Ceilings should usually be reduced in chroma to three-fourths intensity, with slightly less than one-fourth chroma as a minimum reduction.
DISTRIBUTION
Rule 12k. Proportionate distribution of hue, value, and chroma in surface enrichment calls for a small area, high in chroma, and contrasting in value to the rest of the surface, but harmonizing with it. This is usually located in the area of concentration. The larger areas are to be sufficiently reduced in chroma and value to form slight contrast with the background.