Colour or color is a property of light as seen by people. The British spelling of the word is colour, the word color is used in American English
In the United States alone, about 7 percent of the male population—or about 10.5 million men—and 0.4 percent of the female population either cannot distinguish red from green, or see red and green differently from how others do. More than 95 percent of all variations in human color vision involve the red and green receptors in male eyes. It is very rare for males or females to be “blind” to the blue end of the spectrum.
Open up a world of color for people with color blindness
About 8% of Аll men and about 0.5% of all women are suffering from color blindness (colour vision deficiency). This means chances that your neighbor or one of your classmates is colorblind are very high. To put the percentages into perspective – there are close to 300 million people who are colorblind and struggle every day.