Yes, people who are colorblind can see black, and in very rare cases, some may only perceive black, white, and shades of gray.
Color vision deficiency, commonly known as color blindness, involves difficulty distinguishing between certain colors, such as red and green or blue and yellow. According to the reference, in rare instances, individuals might not perceive any color at all, seeing only black, white, and gray. So, while most colorblind individuals see some colors, the ability to see black is generally retained.
In summary:
- Most colorblind individuals can see black.
- In rare cases of complete color blindness, individuals perceive only black, white, and shades of gray.
