Color Palette for Excel Spreadsheet Calendar:

1. Color Name: Sunshine Yellow
   Hex Code: 
                            
                            #FFD700
                        
   Description: A vibrant and cheerful yellow that brings warmth and happiness to the calendar.

2. Color Name: Sky Blue
   Hex Code: 
                            
                            #87CEEB
                        
   Description: A soft and calming blue reminiscent of clear skies, perfect for a soothing background.

3. Color Name: Mint Green
   Hex Code: 
                            
                            #98FB98
                        
   Description: A fresh and invigorating green that adds a touch of nature and positivity to the calendar.

4. Color Name: Peach
   Hex Code: 
                            
                            #FFDAB9
                        
   Description: A soft and delicate peach hue that adds a subtle warmth and sweetness to the palette.

5. Color Name: Lavender
   Hex Code: 
                            
                            #E6E6FA
                        
   Description: A gentle and elegant shade of purple that brings a sense of tranquility and sophistication.

6. Color Name: Coral
   Hex Code: 
                            
                            #FF7F50
                        
   Description: A vibrant and energetic coral color that adds a pop of excitement and vibrancy to the calendar design.