The scarcity of blue is due to the complex principles of chemistry and physics governing color production and perception. These factors contribute to the limited occurrence of blue in the natural environment.

One reason the color blue is difficult to find in nature is that there are no blue-pigmented animals. Another reason is that plants use a red pigment called anthocyanin to produce the color blue. Have you ever seen a blue-colored bird? Or a blue-colored frog? Or even a blue-winged butterfly?

Less than one in ten plants have blue flowers, and it isn't common in animals, either. One reason is that true blue colours or pigments simply don't exist in nature, and plants and animals have to perform tricks to appear blue, according to the University of Adelaide.

While abundant in the sky and sea, true blue pigments are almost non-existent in the natural world. This scarcity is due to the complex requirements for producing blue.

According to scientists from the University of Adelaide in Australia, this is partially because a true blue color or pigment doesn’t really exist in nature. Organisms that appear blue must absorb very small amounts of energy, while reflecting high-energy blue light.