Of course, there's more to strawberries than just colour; we also use variations in shade and hue to identify their texture, giving our brains a big hint that these strawberry. There are no red pixels in this image of strawberries, but mostly people still see a rosy hue, thanks to a phenomenon called color constancy. While these strawberries look red, the blue tint to the photo permeates the whole picture, and there are actually no red pixels in the image at all.
Your brain is trained to think it sees certain colors, which is why the strawberries still appear red. A visual illusion called color constancy, the image was created by Professor Akiyoshi Kitaoka. A psychology professor has the internet shook after this photo of strawberries turns out to be an optical illusion.
As you can see in the tweet above, this photo has no red pixels in it, even though the strawberries pictured clearly appear red. Much to the surprise of your eyes, those strawberries on top are not red at all. A quick click around on Photograph (or even Microsoft Paint) will show that there are no red pixels in the image at.
Remember internet kerfuffle that was 'the dress'? Well, there's another optical illusion that's puzzling the internet right now. Behold: the red strawberries that aren't really red. Or more specifically, the image of the strawberries contains no 'red pixels.' The important distinction to make here.
This photo of strawberries has no red pixels at all! In reality, this optical illusion is a demonstration of color constancy. The image below (courtesy Akiyoshi Kitaoka) depicts a strawberry tartlet. Colour is a bit on the greenish-blueish side, but the strawberries still are red, no? Check what happens if you move the mouse over the image (or tap it).
The color of strawberries is primarily due to the presence of natural pigments called anthocyanins. These pigments are responsible for the vibrant red, pink, or even purplish hues seen in strawberries. The level of anthocyanins present in a strawberry is influenced by a variety of factors including sunlight, temperature, and soil conditions.
As a strawberry ripens, the concentration of these.