When you look at lemon, it looks yellow and is yellow, but when you look at a picture of a lemon on the internet, that is not real yellow. Any thing you look at on the internet that looks like yellow is not yellow.
On the picture up above you can see a lemon that looks yellow but absolutely no yellow is coming off of your screen to your retina. This is because your screen that you are looking at can only produce the colors of red,blue,and green.
All a computer screen or mobile device has to do to make you think its yellow is display a little bit of green and red to you as long as the pixels are small enough so you cannot tell them apart.
So, it is impossible to look at anything yellow on the internet. When I learned this, since then, every time I see something yellow on the internet, I look at it in a weird way. It kind of twists my mind thinking that it’s not actually yellow.
It may be impossible as of now to see yellow on your computer screen, but not on a television. Sharp™ has televisions that have pixels to display yellow. Maybe sometime in the future, computer-screens,mobile devices,and tablets can display yellow, the real yellow!