Ozone is a pale blue gas in its standard state. This blue color is due to the absorption of light in the higher frequency region of the spectrum. However, ozone is typically found in such low concentrations that its color is difficult to see. In liquid form, ozone is dark blue, and in solid form, it is purple-black.
Ozone is an important component of the Earth's atmosphere, and it plays a vital role in absorbing harmful ultraviolet radiation from the sun. While ozone is often associated with smog and air pollution, it is also essential for life on Earth.
