Express Blue

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.

express

Adjective

1. Moving or operating quickly, as a train not making local stops.
2. Specific or precise; directly and distinctly stated; not merely implied.

Noun

1. A mode of transportation, often a train, that travels quickly or directly, either on a regular schedule or as a special or excursion. Express trains often pass through stations along the way without stopping at them.
2. a public utility vehicle, typically a jeepney, that traverses through an expressway

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.