There's a little genetic tweak that makes the combination of red hair and blue eyes the rarest of them all. The same Nature study mentioned above found that another gene variant, HERC2, interacts with both the MC1R gene and the OCA2 gene—and it can shut off the redhead gene while expressing blue eyes and blonde hair.
Red hair and green eye genes are simply not as common in populations as other hair and eye colors. One study found that the red hair-green eyes genetic combination is one of the rarest, at -0.14 correlation. Having red hair and blue eyes is even rarer.
Of those four, green is the rarest. It shows up in about 9% of Americans but only 2% of the world's population. Hazel/amber is the next rarest of these.
What is this? Natural red hair is the rarest hair color in the world, only occurring in 1 to 2% of the global population. Since red hair is a recessive genetic trait, it is necessary for both parents to carry the gene, whether or not they themselves are redheaded.
Black hair is the darkest and most common of all human hair colors globally, due to larger populations with this dominant trait. It is a dominant genetic trait, and it is found in people of all backgrounds and ethnicities.
'It's extremely rare for people to have hair that is naturally a strawberry blonde color. Basically, strawberry blonde is mostly based on red tones, with blonde highlights dotted here and there. It takes its name from the Italian renaissance.
A general observation across experiments was that straight hair was perceived as younger, healthier, and more attractive than wavy hair and darker shades (medium copper and brown) were perceived more positively than blonde hair.
Blonde is Crowned the Sexiest Hair Colour of 2021!
When asked which hair colour they think is sexiest, almost a third of people said they have no preference. However, of those who did have a colour preference: Most say that blonde hair is the sexiest (31.5%)
We found that green is the most popular lens colour, with brown coming in a close second, despite it being one of the most common eye colours. Although blue and hazel are seen as the most attractive eye colours for men and women they are surprisingly the least popular.
Yes, natural purple eyes are possible. There are many different shades of blues and greys out there and many in-between colors. Although very rare, some people's natural pigmentation can even be violet or purple in color.
Grey eyes are one of the rarest eye colors. Less than 3% of the global population has grey eyes. They're most commonly found in people of Northern and Eastern European ancestry. Like all eye colors, they're a product of the amount of melanin in the iris.
Violet Eyes
This color is most often found in people with albinism. It is said that you cannot truly have violet eyes without albinism. Mix a lack of pigment with the red from light reflecting off of blood vessels in the eyes, and you get this beautiful violet!
Black hair and blue eyes is a much more rare combination than is blonde hair and blue eyes. The reason why these two traits are linked is that the genes responsible for hair and eye color happen to be close together on the same chromosomes.
And when you meet a red head with blue eyes, you are looking at the rarest colour combination of all for human beings. Around 17 per cent of people have blue eyes, and when combined with 1-2 per cent having red hair, the odds of having both traits are around 0.17 per cent.
Albinism is when there is an absence of melanin which causes tiny red blood vessels to appear visible. Out of all the unusual eye colours, pink and red are the rarest in the world. According to the National Organization for Albinism and Hypopigmentation, only one in 20,000 people have albinism.
In concurrence with both earlier studies, the results of this study indicated red hair as the least preferred hair color. In the Likert scale positive characteristic evaluation, as well as in the survey questions, brunettes were given the highest ratings of all three categories.
Brown hair is the second most common human hair color, after black. Brown hair is characterized by higher levels of eumelanin and lower levels of pheomelanin. Of the two types of eumelanin (black and brown), brown-haired people have brown eumelanin; they also usually have medium-thick strands of hair.
#1 Most Popular Hair Colour – Black Hair
In fact, around 75 to 85 percent of the people in the world have some shade of black hair.
Red is the rarest hair color, according to Dr. Kaplan, and that's because so few MC1R variants are associated with the shade. “Only three variants are associated with red hair,” she says. “If a person has two of these three variants, they almost certainly have red hair.
Experts believe that the reason long hair is more attractive is the evolutionary one. In short, it is believed that the length of a woman's hair represents her body's ability to have children. In turn, this makes female fertility one of the markers of human beauty.
No, no one has pink hair at birth. Pink is not a natural color for hair anywhere.
True blonde is also a rare hair color, and the Daily Mail reports that only 12.7 percent of women have pure blonde hair, and only 9.9 percent of men do. Surprisingly, many of the genetic differences identified by the researchers correlated with factors other than pigmentation like hair texture and growth.
Dirty blonde is unlike your typical squeaky clean blonde shades like platinum and champagne. The hue is a medium to dark blonde shade with wheaty, brown undertones (hence, the word dirt in the name). These hints of brunette make dirty blonde dimensional and low-maintenance—what more could you want?