Which Moon Color Is the Rarest? The rarest moon color is blue. While the moon can appear in various shades due to atmospheric conditions, a true blue moon is an exceedingly uncommon phenomenon. The Elusive Blue Moon: A Rarity in the Night Sky The night sky is a canvas of wonder, and among its most captivating spectacles is the moon. We often associate the moon with a silvery white glow. What is the rarest type of moon? Rather, a blue moon is special because it is the extra Moon in a season with four full moons. This usually only happens every two-and-a-half years. Since the 1940s, the term blue moon has also been used for the second full moon in a calendar month. This usually happens only every two. The term Black Moon, unlike a Blue Moon, doesn't refer to the moon's color. Its rarity is tied to the lunar calendar's quirks and its interaction with the Gregorian calendar. The real color of the moon is gray, but at different times, it appears to change color from our perspective on Earth. When the moon takes on a red or pink hue, we call it a blood moon, and a yellow or orange moon is often dubbed a harvest moon. The rare super blue moon, however, isn't actually blue. In reality, the rarest color the moon appears to be is one of a kaleidoscope of hues, not just a single, static shade. While its true color is an off-white, brownish-gray, the atmospheric conditions and other factors can sometimes paint the moon with unique, fleeting tints that are exceptionally uncommon. This is the rarest color of the moon. However, just because the moon can appear in so many colors doesn't mean it actually changes color. The dozens of hues are caused by many different factors, including the time of day, the moon's position, and the particles surrounding the moon. Let's take a look at why some of the unusual moon colors occur. White. The rare blue Moon appearance occurs when there is a lot of dust in Earth's atmosphere. In our night sky the Moon has been viewed in many varied hues ranging from completely black due to no light reflection from the sun to a purple hue which has yet to be explained even by NASA themselves. Blood moon, supermoon, strawberry moon and the ring of fire: all impressive names, but what exactly do they mean? Super Blue Blood Moon is the rarest type of Moon on this list because it requires three conditions to coincide. It needs to be a Blue Moon, a Supermoon, and a total lunar eclipse. We all know to be cautious when there is a full moon in the sky, but what about other species? Beginner astronomers may know what to look for, but the rest of us may struggle to understand what to look for and what the various moons mean. Here are some rare moons to keep an eye out for in the coming months and years. Aside from these rare types of the moon, there are a lot of fascinating.