No, we know all possible colors because they are within the visible light spectrum. There are certainly waves and particles that are undiscovered and exist outside our sense of perception...
science is such a buzz kill sometimes ya would be great if there were some new colors but i think this answers that .....
Well there are some "colors" that we can't see. Colors are different wavelengths of light, ranging from red to violet on the visible spectrum. Wavelengths longer than "red" are called infrared, and those shorter (more energetic) than violet are called ultraviolet. Certain animals can see these wavelengths (snakes can see infrared, bees can see ultraviolet, for example), but we can't. Theoretically, if our eyes were able to see the normal visible spectrum plus UV or IR, those types of light would appear as completely new colors. And that's just scratching the surface of the types of light waves. Radio waves, microwaves, X-rays, and gamma rays are also types of light. I don't know if there are any animals capable of seeing these wavelengths as colors, but from a purely theoretical standpoint they are no different from ultraviolet and infrared; just a type of light that we can't see as color.
Colors are just an imaginary phenomenon created by the way our eyes and brain interpret the light that enters our eyes. Something I think is interesting about this is that it's possible that other animal's eyes can in parts of the spectrum beyond what we see in. A cat can walk into a room it's never been in before, and within second determine the warmest place to take a nap. Maybe it's because a cat sees something more like what our IR cameras can see. They can tell how warm your bed is before they even get close to it. And if the furnace vent is warmer, they'll go there instead. So in way, that would be seeing another color. It's seeing "warm" as a color and "cold" as a color. It might see red as warm as blue as cold, and then what we interpret as blue looks green to them and what we interpret as red looks purple to them. Or something like that.
Richard Dawkin's 'Unweaving the Rainbow' goes into detail about this subject as well as the relationship between science and art. Personally, I find that within science, there is a certain poetry used to describe nature. You can extract this from talks given by brilliant minds such as Carl Sagan and Neil Tyson. The language they use to compose their thoughts is just so rich yet simeltaneously coherent.
there are colors that humans will NEVER see. just like there are sounds and other vibrations we will never see. our vision does not pick up exactly how the world is. sort of foolish to think it might.
Cat's eyes have rods and cones, so they see similar to humans, but they're specialized in different ways that humans. They're more specialized to detecting motion than humans and as a result, they are less responsive to minor differences in colors and more responsive to motion. It's also possible that the way their brain interpret that data is different. That's harder for people to understand because we can't get inside a cat's brain to "see" how their brain interprets that data sent by their eyes. It could also be that they are taking a wider spectrum of light, and interpreting that spectrum into the same number of "colors". So the way that it might be hard for you to tell the difference between two similar shades of a color, since cats eyes and brains are interpreting a wider spectrum, the range of colors that are easily confused are also wider. So like, if you look at the flower shaped logo at the top of this page, you can tell it's made of two different shades of green. They're similar, but you can tell a difference. But telling the difference between the green in the menu bar below the logo and the green on the left of the logo becomes harder. A cat may look at that logo and not be able to tell it's two different colors or that the menu bar is a third. It's "margin of error" is wider. It's blind-spot is in details inside the spectrum, whereas your blind spot is out at the ends of the visible spectrum. If that makes sense.
I thought the same thing when I saw Avatar for the first time. Pretty sick colors in the scenes where the forest is lighting up around em and shit. Was also totally baked so that may be a factor.
Well, if color is determined by the configuration of rods and cones in your eyes, that means that we are physically limited to a small spectrum of colors. We can't see what we are not capable of seeing. You would have completely redo - or tune - the mechanism that allows color to be seen. Like a hardware upgrade.
Actually, when we think about it logically.. science can't disprove it. Colours are our brain PERCEPTION of the wavelengths we see.. the photons arent actually coloured.. So, theorericly we could see different perseptions of them, since they arent actually anything BUT our perception of the wavelength. and practiclly.. (sorry mods)