There are. They're called ultraviolet and infrared. Just because we can't see them, doesn't mean we can't detect them.

Sure there are, if you are a man. Haven't you ever gone shopping for paint with you wife and she picks out some color that you didn't even know was a color?

No

I always wonder if colours look different to other people, like does the colour i call pink, actually represent blue to another person, but we both see it the same. Confusing, lol

There are colours that some people can see that others can't. The near ultra-violet is absorbed bu the lens of the eye. If you have the lens removed, for example because of a cataract, you can see further into the ultra violet. There are also suggestions that there are two variants if the blue sensor, and that the variants are carried on the X chromosome. All men, and half of all women, will see one of two (slightly) different blues. But some women will bea able to see two different blues and, at blue end of the spectrum, make distinctions that others cannot.

yes i have wondered, pigeon apparently have very good sight??? and can see many colours we can't. but is it just colours or are there other things eg creatures we can't see???

Before the experiments of Ibn al-Haitham Al Hazan, people believe eyes emitted the rays of light that allow us to see. Now we know that eyes receive light. Descartes believed a prism distorted white light into colors; contrarily, Newton discovered the white light is the mixture of the colors, which are pure. The prism acts as an analyzer rather than a distorter. Bergson, Huxley and modern scientists have found that the synapses in the brain filters out information rather than produces it. in fact, around 90% of information is not perceived. It is the information that our brain deems unimportant for survival. Infrared and Ultra-violet are examples of wavelengths that exist without us knowing. It is fair to say that those examples are only two brush dabs making up a dozen Pollack paintings. Entheogens such as Mescaline from a Peyote plant widen the information funnel and allows one to notice the isness of an object's illumination, what one might call the Dharma-Body. Anyways, to answer your question, yes. Birds have more sensitive receptors that can see colors that look the same to humans.

There are. Infra-red and ultra violet yo...

no

but there are.!!!..xrays, infrared, ultraviolet, radio waves,,are all part of the same spectrum

I hadn't, but i've wondered, since the brain sees the wave color that the object absorbs, I wonder what color some things really are. If we just saw them regardless of what they absorb or reflect.

pink, i just can't see that at all.

Colours don't actually exist its just what human brain perceives that wavelength of light to mean. The limits of the human eye means that we can see around us to the degree that we require. So, to everyone who put the EM spectrum is a colour I believe your wrong.

awsome!

Actually there are colors unseen to humans (without special tools to let us see). Infrared is one of them. The higher frequencies of infrared can be seen by Goldfish who by coincidence can also see in the lower frequencies of ultraviolet. Some insects like bees see in the UV spectrum as well. Snakes do not 'see' infrared, they have other organs (other than eyes) to sense heat. However a large group of people consider this sense to be 'sight'. Ultraviolet gives us a clue as to what it looks like. Its violet or a brighter/deeper/more intense shade of purple. Infrared also gives us a clue, it is a deeper shade of red - more intense, brighter whatever. The human eye is an interesting organ, it detects higher quality images and a broader spectrum of color than many animals. Dogs do not see as much color as we do, for them colors are 'washed out' dulled. Color vision may be a fairly new evolutionary step for us humans. Even as late as 3000 years ago it is possible that the majority of humans may not have detected 'purple'. The reason for this theory is that so called 'purple' and 'blue' was often confused or switched in documents and manuscripts we have. Further there is a high instance of color blindness in the human species: http://en.wikipedia.org/wiki/Color_blindness goes into greater depth on the subject. You will find that in most cases color blindness is only the loss of some colors to where other colors are different, not actually not seen.

This is a duplicate question. http://www.answerbag.com/q_view/100426 Only a small portion of the electro magnetic spectrum is visible to the human eye. I imagine there are plenty of colors to be made up not visible to the human eye. http://en.wikipedia.org/wiki/Electromagnetic_spectrum It is also debatable whether how you see yellow is the same as how I see yellow. http://www.answerbag.com/q_view/664499 http://www.answerbag.com/q_view/714395 http://www.answerbag.com/q_view/45453