Gravel Grey Blue

Blue-gray

Blue-gray is a medium blue-gray color on the cool side of the color wheel. The name blue-gray was introduced by Crayola for a crayon color used from 1958 to 1990. The complementary color is #CC9966, a warm khaki or brown.

Gravel

Gravel is a loose aggregation of rock fragments. Gravel occurs naturally on Earth as a result of sedimentary and erosive geological processes; it is also produced in large quantities commercially as crushed stone.

Grey

Grey or gray is an intermediate color between black and white. It is a neutral or achromatic color, meaning that it has no chroma. It is the color of a rain or storm cloud, of ash, and of lead.

Blue

Blue is one of the three primary colours in the RGB (additive) colour model, as well as in the RYB colour model. It lies between violet and cyan on the spectrum of visible light. The term blue generally describes colours perceived by humans observing light with a dominant wavelength between approximately 450 and 495 nanometres. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called the Tyndall effect explains blue eyes. Distant objects appear more blue because of another optical effect called aerial perspective.

gravel

Noun

1. Small fragments of rock, used for laying on the beds of roads and railways, and as ballast.
2. A type or grade of small rocks, differentiated by mineral type, size range, or other characteristics.

Verb

1. To apply a layer of gravel to the surface of a road, etc.
2. To puzzle or annoy.

grey

Adjective

1. Commonwealth standard spelling of gray.
2. Synonym of coloured (pertaining to the mixed race of black and white).

Verb

1. Commonwealth standard spelling of gray.

blue

Adjective

1. Of a blue hue.
2. Depressed, melancholic, sad.

Noun

1. The colour of the clear sky or the deep sea; the colour midway between green and violet in the visible spectrum and one of the primary additive colours.
2. Anything coloured blue, especially to distinguish it from similar objects differing only in colour.