Color Palette for Small and Simple Excel Report:

1. Light Blue
   - Hex Code: 
                            
                            #ADD8E6
                        
   - Description: A calming and professional color for headers and borders.

2. Light Gray
   - Hex Code: 
                            
                            #D3D3D3
                        
   - Description: A neutral color for background and text to maintain simplicity.

3. Dark Green
   - Hex Code: 
                            
                            #006400
                        
   - Description: A contrasting color for highlighting important data or sections.