<Rainbow Vibes>
1. Red - 
                            
                            #FF3B30
                         - A vibrant red that captures attention, perfect for highlights.
2. Orange - 
                            
                            #FF9500
                         - A lively orange that adds warmth and energy, great for text.
3. Yellow - 
                            
                            #FFCC00
                         - A bright yellow that brings cheerfulness, ideal for backgrounds.
4. Green - 
                            
                            #4CD964
                         - A fresh green that conveys growth and harmony, suitable for accents.
5. Blue - 
                            
                            #007AFF
                         - A striking blue that represents calmness, excellent for headers.
6. Indigo - 
                            
                            #5856D6
                         - A deep indigo that adds sophistication, perfect for secondary text.
7. Violet - 
                            
                            #AF52DE
                         - A playful violet that offers a touch of creativity, great for highlights.

This color palette features vibrant rainbow colors that are perfect for a modern, clean Excel design. Each color is chosen not only for its vibrancy but also for its functionality in various roles such as background, text, and highlights, ensuring clarity and visual appeal.

Do you have specific use cases in mind for the palette, or would you like to adjust any colors or their descriptions?