<Soothing Background for Chessboard UI>
1. Calm Blue - 
                            
                            #A4C8E1
                         - A soft, light blue that evokes a sense of tranquility and calmness.
2. Gentle Sage - 
                            
                            #B7C9A8
                         - A muted green that provides a refreshing and soothing backdrop, reminiscent of nature.
3. Dusty Lavender - 
                            
                            #D3C6E6
                         - A subtle lavender that adds a touch of warmth while remaining easy on the eyes.
4. Light Taupe - 
                            
                            #D7CFC2
                         - A warm beige that complements brown tones without overpowering them.
5. Soft Peach - 
                            
                            #F4D6C1
                         - A light peach that adds a gentle warmth, creating a welcoming environment.

This color palette is designed to enhance the visual experience of a brown chessboard UI while providing a soothing background that is easy on the eyes. The colors are selected to create a harmonious balance with the brown tones of the chessboard.

Would you like any specific color adjustments or additional options within this palette?