In this image, a mesmerizing ruby cube stands out against the backdrop of a vibrant and futuristic city. The cube is brilliantly colored, with a glossy finish that reflects its surroundings. The city exudes a sense of technological wonder, with towering buildings and advanced architecture. The overall composition adheres to a 2:3 aspect ratio, making it suitable for a wide range of display formats. The image resolution is set at 750 pixels, allowing for clear visibility and detail.