Color Blind
The condition is called color deficiency.
Many people have a degree of color-blindness. They are unable to distinguish certain colors or shades of colors from others. Some people see only in 'black and white.'
The colors in your question are halfway between the major colors. For example, red-orange is halfway between pure red and pure orange.
The website for the Sharpie brand permanent markers indicates that the "fine point" type comes in 39 colors.
Indigo is the color seen between blue and violet on the color spectrum. While the colors in the spectrum as gradual and continuous, then human eye only distinguishes seven unique colors.
The condition is called color deficiency.
monochromatism
No. Research indicates that they do have some ability to distinguish between different colors (specifically between blue and green), but they do not see colors "the same way humans do"... except, possibly, for humans with certain kinds of color blindness.
Alcohol can reduce your ability to distinguish colours, especially red and green.
its color defiency :) color blindness is when u cant see any colors and it is very rare.
Red, Blue, Yellow and Green
we are seeing primarily with the rods
Big cats, like their smaller cousins, have limited color vision. They can distinguish between the basic colors, but have a better ability to differentiate colors at the upper end of the visual spectrum. They are less able to distinguish between shades of red, for example, than they would be able to distinguish between shades of blue.
inability to identify colors
Alcohol can reduce your ability to distinguish between two colors. What are these colors?
inability to identify colors
A total inability to distinguish colors (achromatopsia) is exceedingly rare. These affected individuals view the world in shades of gray. They frequently have poor visual acuity and are extremely sensitive to light (photophobia)