Sure! For a set of 6 buttons that gradate and are visually appealing, I will create a color palette that transitions smoothly. Here’s the color palette:

 <Gradient Button Colors>
1. Light Blue - 
                            
                            #ADD8E6
                         - A soft and calming blue that can serve as the lightest button color.
2. Sky Blue - 
                            
                            #87CEEB
                         - A bright and cheerful blue that works well as the second button color.
3. Dodger Blue - 
                            
                            #1E90FF
                         - A vibrant blue that adds energy and can be used for the mid-range button.
4. Steel Blue - 
                            
                            #4682B4
                         - A slightly muted blue that provides a nice contrast for the fourth button.
5. Royal Blue - 
                            
                            #4169E1
                         - A strong and bold blue for the fifth button, adding depth to the gradient.
6. Medium Blue - 
                            
                            #0000CD
                         - A deep blue that rounds off the gradient, perfect for the final button color.

Color Palette Description:

This palette consists of a gradient of blues ranging from light to deep hues. The colors are chosen to provide a smooth transition while remaining visually harmonious. Each button can have a slight variation in saturation or brightness to create a unified look across your Excel interface.

Follow-Up Questions:

1. What is the overall theme or context of the Excel project?
2. Do you have any specific shades or color preferences in mind?
3. Would you like any additional colors for hover states or effects on the buttons?