The term blue generally describes colours perceived by humans observing light with a dominant wavelength that's between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colours; azure contains some green, while ultramarine contains some violet.

The meaning of BLUE is of the color whose hue is that of the clear sky : of the color blue. How to use blue in a sentence.

Blue is the color of the Earth 's sky and sea. Earth looks blue when seen from outer space by astronauts. It is the color of cold, introversion and openness, by opposition to the red, which is the color of warm, extroversion and the closure.

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2024年2月20日 · Blue is a color often found in nature, such as the pale blue of a daytime sky or the rich dark blue of a deep pool of water. This is perhaps why we often describe blue as calm and serene. Yet, as a cool color, blue can sometimes seem icy, distant, or even cold.

Varieties of the color blue may differ in hue, chroma (also called saturation, intensity, or colorfulness), or lightness (or value, tone, or brightness), or in two or three of these qualities. Variations in value are also called tints and shades, a tint being a blue or other hue mixed with white, a shade being mixed with black.

2025年3月11日 · Blue, a color that commands a unique position in the color spectrum, has permeated various aspects of our lives, imbuing them with profound meanings and emotions. As the color of the sky and sea, it has been a ceaseless source of inspiration and symbolism throughout history and across cultures.

2025年2月26日 · Blue, in physics, light in the wavelength range of 450–495 nanometers in the visible spectrum. In art, blue is a color on the conventional wheel, located between green and violet and opposite orange, its complement.

2023年8月11日 · Curious about the meaning of the color blue? Here we talk about not only the color blue meaning, but also its symbolism, business use and physical effects.

BLUE definition: 1. of the colour of the sky without clouds on a bright day, or a darker or lighter type of this…. Learn more.