colour: Quick Facts

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Facts

Also Known As	color

Photos and Videos

A circular RYB color wheel divided into twelve segments, showing a progression of colors from red, orange, and yellow to green, blue, and violet.

A diagram of Newton's prism experiment shows a beam of white sunlight entering a glass prism and emerging as a spread of colors labeled red, orange, yellow, green, blue, indigo, and violet.

energy distribution in light from daylight

spectral reflectance curve of emerald green

chromaticity diagram

Munsell's colour solid

Diagram explaining the Munsell color system, showing a circular hue wheel with labeled color segments, a vertical grayscale bar for value (lightness), and a grid illustrating chroma (color intensity) variations.

Diagram of the Ostwald System showing one hue arranged in a triangle, with color samples transitioning from white at the top left to black at the bottom left, and increasing in saturation toward full color on the right. Arrows indicate decreasing whiteness, decreasing blackness, and a vertical row of neutral grays.

A purple and pink flower in a field.

A close up image of a digital color-picker, showing shades of greens, yellows, reds, pinks, and blues.

A palette smeared with different colors of paint sits on top of multicolored paint swatches arranged in an arch.

How do blind people perceive the world?

A close up image of a colorful bug with large eyes.

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Topics

RYB color model colour atlas additive mixture auxochrome chromaticity tint dominant wavelength hue intensity purity photon blue light Sunlight What causes a rainbow?luminous intensity How Is Light Both a Particle and a Wave?speed of light brightness

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Key People

Isaac Newton

Isaac Newton

English physicist and mathematician

Edwin H. Land

Edwin Herbert Land

American inventor and physicist

Karl Schwarzschild

Karl Schwarzschild

German astronomer

John Tyndall.

John Tyndall

Irish physicist

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Ivan Vasilyevich Klyun

Russian artist and art theorist

Hertzsprung, c. 1930

Ejnar Hertzsprung

Danish astronomer

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Ewald Hering

German physiologist and psychologist

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Joy Paul Guilford

American psychologist

Color wheel, visible light, color spectrum. Colour wheel

The Origins of Colors, Pigments, and Dyes

Artist paint brushes and watercolor paintbox on wooden palette. Instruments and tools for creative leisure. Creative background. Paintings art concept. Painting hobby. Back to school. Top view.

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