Define colour? How many colours are there?

Answer 1

in art you have three fundamental colours: reg, yellow, blue, and all others can be made from them.

in physics the colours are a continuum and in principle you could call a "colour" each single frequency or wavelength (of light), and since you could vary the wavelength in very, very small increments, you'd end up with a very, very large number of colours. In theory an infinite number, in practice only a very, very large number.

what I find interesting is that the colours corresponding, in physics, to the higher temperature (i.e. the blues) are typically considered, in art, to be "cold" colours. And vice-versa.

Answer 2

Well according to the rainbow...

Red Orange Yellow Green Blue Indigo Violet

Answer 3

Depends on what you mean. If you're talking about the color of, say, an object, then the object's color is defined by the wavelength of light it reflects. For example, if you shine white light on a red apple, the apple appears red to you because the apple is reflecting the red wavelengths of light back to your eyes and all other colors of light are being absorbed.

And if you want to get deeper than that, the red you see is your brain's interpretation of the wavelength of light that was received by the rods and cones in your eyeball and transmitted to your brain by your optic nerve. Who can say that the color red is perceived the same by each person? What I perceive as the color red might be perceived by another person as what I'd call blue. So perhaps in your world, apples are blue by my definition but you learned that particular perception as red and so it's red to you. :-)

Answer 4

what appears to eye ,there r 7 colors that is Red Orange Yellow Green Blue Indigo Violet

Answer 5

in real world we have only three original colour that is Red ,Green and blue and other colour r generated by different combination of these three colour's. bye take care.

Answer 6

There are 3 basic colors. Red, green and blue. ANd there are millions of colors which is the combination of these 3 colors

Answer 7

Color or colour (see spelling differences) is the visual perceptual property corresponding in humans to the categories called red, yellow, white, etc. Color derives from the spectrum of light (distribution of light energy versus wavelength) interacting in the eye with the spectral sensitivities of the light receptors. Color categories and physical specifications of color are also associated with objects, materials, light sources, etc., based on their physical properties such as light absorption, reflection, or emission spectra.

Typically, only features of the composition of light that are detectable by humans (wavelength spectrum from 400 nm to 700 nm, roughly) are included, thereby objectively relating the psychological phenomenon of color to its physical specification.

Since perception of color stems from the varying sensitivity of different types of cone cells in the retina to different parts of the spectrum, colors may be defined and quantified by the degree to which they stimulate these cells. These physical or physiological quantifications of color, however, do not fully explain the psychophysical perception of color appearance.

The science of color is sometimes called chromatics. It includes the perception of color by the human eye and brain, the origin of color in materials, color theory in art, and the physics of electromagnetic radiation in the visible range (that is, what we commonly refer to simply as light).

Read this, very informative,

Answer 8

Color is any unique combinatin of hue, saturation, and lumination. There's an infinite amount of colors, but a computer only recognizes 13,824,000.