Final answer:
The color of ozone is pale blue. It forms a protective layer in the Earth's stratosphere which appears hazy blue in photographs. This layer shields the Earth from harmful UV radiation.
Step-by-step explanation:
The color of ozone is pale blue. Ozone is a gas composed of three oxygen atoms (O3) and occurs in the Earth's upper atmosphere, specifically in the stratosphere, which is about 9 to 18 miles (15 to 30 km) above the Earth's surface. It plays a critical role in protecting life on Earth by preventing harmful ultraviolet (UV) radiation from reaching the planet. Without the protective stratospheric ozone, more UV radiation would reach the Earth, causing damage to living organisms. The Earth's protective ozone layer can appear as a hazy blue layer in atmospheric photographs, such as those taken by space agencies like NASA.