Morandi blue belongs to the Morandi color system, and its most notable features are low saturation and low brightness. Compared with bright blue, its color concentration is reduced, and there is no strong visual impact. This low-key color presents a subtle and restrained visual effect, as if covered with a layer of light mist, giving people a quiet and soft feeling. Morandi blue has a unique tone. It is not a simple light blue or dark blue, but somewhere in between, with a subtle grayscale. The existence of this grayscale makes it neither too bright and frivolous, nor too dark and oppressive. It achieves a visual balance, so that people will not feel visual fatigue after looking at it for a long time.