Color Palette:
1. Color Name: Deep Blue
   Hex Code: 
                            
                            #003366
                        
   Description: Represents the primary color for the Gantt chart bars in Excel.

2. Color Name: Light Blue
   Hex Code: 
                            
                            #66CCCC
                        
   Description: Used for highlighting specific tasks or categories in the Gantt chart.

3. Color Name: Dark Green
   Hex Code: 
                            
                            #336600
                        
   Description: A complementary color for the Gantt chart background or gridlines.

4. Color Name: Light Green
   Hex Code: 
                            
                            #99CC99
                        
   Description: Provides a softer contrast to the dark green for additional emphasis.

5. Color Name: Gray
   Hex Code: 
                            
                            #999999
                        
   Description: Ideal for labeling and text within the Gantt chart for clarity and readability.

6. Color Name: White
   Hex Code: 
                            
                            #FFFFFF
                        
   Description: Serves as the background color to maintain overall chart visibility and contrast.