The Instagram app icon is one of the most recognisable logos. It represents a skull wearing a surgical cap, with a colourful contrast of blue, pink, and yellow colours that creates a vibe of intelligence and accuracy, prompting users to feel calm, and confident. Meanwhile, the thick white line on the skull blends with other vibrant colours to generate eye-catchy visual saliency. It’s a simple yet effective design conveying different messages. People prefer images with simple processing, images that are easy to understand. The more you see it, the more you like it. All the warm colours in the app logo create a sense of excitement and energy. It feels like watching a sunset and capturing the precise moment.