<Fun Birthday Card> 
1. Bright Pink - 
                            
                            #FF6F91
                         - A vibrant and cheerful pink that adds a playful touch.
2. Sunny Yellow - 
                            
                            #FFEA00
                         - A bright, sunny yellow that evokes happiness and celebration.
3. Sky Blue - 
                            
                            #00BFFF
                         - A refreshing blue that brings a sense of fun and joy.
4. Lime Green - 
                            
                            #32CD32
                         - A lively green that adds an energetic and festive feel.
5. Lavender Purple - 
                            
                            #E6E6FA
                         - A soft purple that balances the palette with a whimsical touch.

This color palette is designed to evoke a sense of joy and celebration, perfect for a fun birthday card. The bright and cheerful colors will create an inviting and festive atmosphere.

Would you like to explore specific themes or elements for the birthday card design, such as illustrations or typography?