What kind of blue color scheme looks good

Quick answer：

The aesthetic appeal of a blue color scheme depends on various factors such as the context, the intensity of the blue, and the colors it is paired with. Soft, muted blues can create a calming and serene atmosphere, while brighter, more vibrant blues can evoke energy and excitement. It's often recommended to consider the color theory, which suggests that colors can be paired in complementary, contrasting, or analogous ways for visual harmony. For a good-looking blue color scheme, it's important to balance the intensity and temperature of the colors, ensuring they complement each other without overwhelming the space.