The red color of domestic LPG (liquefied petroleum gas) cylinders serves as a crucial safety feature, symbolizing danger and caution. This visual warning helps users and handlers recognize the cylinders quickly, especially in crowded or low-light environments, thereby reducing the risk of accidental mishandling. Major oil marketing companies in India, such as Indian Oil, Bharat Petroleum, and Hindustan Petroleum, adhere to a common color standard for these cylinders, ensuring that consumers can easily identify them regardless of the brand. This standardization not only enhances safety but also simplifies logistics and regulatory compliance within India's extensive LPG supply chain. Furthermore, the red color helps differentiate domestic LPG cylinders from industrial or commercial gas cylinders, which may feature different colors based on their intended use. This distinction is vital in preventing misuse and ensuring that household cylinders are used solely for domestic cooking purposes.