Differences in Skin Colors and Their Relationship With Melanin Allah, Most High, says in the Qur'an:

Reflecting upon this verse, Allah highlights the diversity of human skin colours and languages as one of His signs. This diversity is a reminder of the vastness and intricacy of Allah's creation, and it serves as a profound sign for those who contemplate it deeply.

Scientists explain that the variation in skin colour among humans is primarily due to the presence of melanin, the pigment responsible for the colour of our skin. Within the skin, there are specialized cells called melanocytes, which produce melanin. These cells are present in all individuals—whether they are fair-skinned or dark-skinned—and the number of these cells is roughly the same across different skin tones. The difference in skin colour, however, is determined by the amount and type of melanin produced, as well as how it is distributed within the skin. Melanin acts as a protective substance that helps absorb harmful ultraviolet (UV) radiation from the sun. People living in regions closer to the equator, where sunlight is more intense and direct, tend to have darker skin. This is because the increased melanin in their skin serves as a natural defense against UV radiation. Conversely, individuals living in regions with less direct sunlight, such as those near the North and South Poles, typically have fairer skin. Interestingly, over time, the amount of melanin in a person’s skin decreases as they age, which is why many people notice their skin becoming lighter with age. This process, however, does not alter the underlying principle that melanin is regulated by hereditary factors encoded in a person's genes.

The Qur'an’s mention of the differences in colours and languages is a reflection of Allah’s perfect design. The diversity of human skin tones is a reminder of Allah's perfect creation and wisdom. It is important to understand the deeper spiritual and moral implications of this diversity. People across the world have slightly different shades of skin, even within the same racial or ethnic group. The human eye can distinguish up to eight hundred thousand subtle variations in colour, making each person’s skin tone unique. This diversity is a clear sign of the greatness and detailed knowledge of Allah.

Islam emphasizes that no one is superior based on their physical appearance or skin colour. The Prophet Muhammad (peace be upon him) clarified this in a well-known hadith: "O you people! Indeed, your Lord is One. There is no superiority for an Arab over a non-Arab, nor for a non-Arab over an Arab; neither is there superiority for a red-skinned over a dark-skinned, nor for a dark-skinned over a red-skinned except by righteousness." (Ahmad) In this statement, the Prophet (peace be upon him) reminds humanity that all people are equal in the sight of Allah, and the only distinction that matters is one’s righteousness and good deeds. Another hadith reinforces this point, in which the Prophet (peace be upon him) said: "Indeed, Allah does not look to your appearances and wealth. He only looks to your hearts and your deeds." (Muslim) This teaching reinforces the notion that Allah judges individuals based on their inner character and actions, not their outward appearance.

The Prophet Muhammad (peace be upon him) also demonstrated a strong stance against racism and prejudice. Once, when one of the Prophet’s companions referred to Bilal (may Allah be pleased with him) as "the son of a black woman," the Prophet (peace be upon him) became very upset. He corrected his companion, emphasizing the dignity and equality of all people. Additionally, the story of Abu Bakr As-Siddeeq (may Allah be pleased with him) purchasing Bilal’s freedom from his master demonstrates the Prophet's encouragement of equality. After freeing Bilal, Abu Bakr (may Allah be pleased with him) treated him as a true brother, declaring: "This is my brother in truth." 'Umar Ibn Al-Khattab (may Allah be pleased with him) also acknowledged the significance of Bilal’s freedom and leadership by stating: "Abu Bakr is our leader who manumitted our leader." This powerful gesture highlights the profound bond of brotherhood and equality among Muslims, regardless of skin colour or social status.

The differences in human skin colours are not a source of superiority or division, but rather a sign of the greatness of Allah’s creation. The Qur’an encourages us to reflect on the wisdom behind these differences. The real measure of a person’s worth is not their skin colour, wealth, or appearance, but their righteousness and good deeds. The teachings of Islam call on us to treat all people with respect and equality, as demonstrated by the Prophet Muhammad (peace be upon him) and his companions.