Blue background button color scheme

Quick answer：

A blue background button color scheme refers to the design of buttons with a blue color on their background. This design choice can be used for aesthetic reasons or to convey a sense of calmness and professionalism. In user interface design, the color scheme should be visually appealing and should also align with the overall design and branding of the product or website. The specific shade of blue and the contrast with the button's text and border are important considerations for usability.