<Gradual Blue Spectrum for Financial Spreadsheet>
1. Baby Blue - 
                            
                            #B2E0F2
                         - A very light and airy blue that creates a serene and inviting atmosphere.
2. Light Blue - 
                            
                            #ADD8E6
                         - A soft, pastel blue that enhances readability while remaining unobtrusive.
3. Sky Blue - 
                            
                            #87CEEB
                         - A bright yet gentle blue that brings clarity and focus to the spreadsheet.
4. Cornflower Blue - 
                            
                            #6495ED
                         - A medium blue that balances professionalism with a touch of vibrancy.
5. Deep Sky Blue - 
                            
                            #00BFFF
                         - A striking blue that retains a level of sophistication while being more pronounced.
6. Medium Blue - 
                            
                            #0000CD
                         - A strong blue that conveys reliability and is suitable for clear data presentation.
7. Dark Blue - 
                            
                            #00008B
                         - A rich, classic blue that provides a solid background for emphasizing key data points.

This color palette features a gradual spectrum of blue shades, transitioning from very light to dark. This approach offers a cohesive and visually appealing look while maintaining professionalism and clarity, making it suitable for a financial spreadsheet.

Would you like to see any additional shades or have specific preferences for how these colors might be used within the spreadsheet?