Color Palette for Excel:

1. High Blue:
   - Hex Code: 
                            
                            #0072C6
                        
   - Description: A vibrant and dynamic blue shade representing high values in Excel data.

2. Medium Blue:
   - Hex Code: 
                            
                            #4F81BD
                        
   - Description: A balanced and versatile blue tone for representing medium values in Excel spreadsheets.

3. Low Blue:
   - Hex Code: 
                            
                            #A5B3D7
                        
   - Description: A soft and subtle blue hue ideal for representing low values in Excel charts and graphs.

4. Highlight Yellow:
   - Hex Code: 
                            
                            #FFD966
                        
   - Description: A bright and attention-grabbing yellow color to highlight important information in Excel sheets.