Here’s a sweet color palette that consists of 11 colors, perfect for an Excel spreadsheet:

 <Sweet Colors>
1. Cotton Candy - 
          
          #FFB3D9
        - A soft pink reminiscent of fluffy cotton candy.
2. Lemonade - 
          
          #FFF5A3
        - A light pastel yellow that evokes the freshness of lemonade.
3. Mint Cream - 
          
          #B2E0D9
        - A refreshing mint green, calm and soothing.
4. Lavender Mist - 
          
          #E6C2E3
        - A delicate lavender that adds a touch of elegance.
5. Peach Sorbet - 
          
          #FFCC99
        - A warm peach that feels inviting and sweet.
6. Sky Blue - 
          
          #A4D3E2
        - A light, airy blue that brings a sense of openness.
7. Lilac Breeze - 
          
          #E3D6F6
        - A pale lilac that adds a whimsical touch.
8. Soft Coral - 
          
          #FF6F61
        - A gentle coral that is vibrant yet soft.
9. Honeydew - 
          
          #E1F7D5
        - A light green that is fresh and uplifting.
10. Creamy Beige - 
          
          #F2E2C4
        - A warm beige that provides a neutral balance.
11. Frosted Violet - 
          
          #D6C9E4
        - A soft violet that adds a touch of sophistication.

This palette features soft, pastel colors that create a sweet and inviting atmosphere, perfect for spreadsheets that need a gentle touch.

Would you like to know how to apply these colors in Excel, or do you need any further assistance with different themes?