Color Palette:
1. Color Name: Midnight Blue
   Hex Code: 
                            
                            #191970
                        
   Description: A deep, dark blue reminiscent of the night sky, suitable for creating a sense of depth and contrast in the timeline template.

2. Color Name: Dark Slate Gray
   Hex Code: 
                            
                            #2F4F4F
                        
   Description: A rich, muted gray with green undertones, adding a touch of sophistication and formality to the timeline design.

3. Color Name: Deep Burgundy
   Hex Code: 
                            
                            #800020
                        
   Description: A velvety, dark red that brings warmth and elegance to the palette, perfect for highlighting important milestones on the timeline.

4. Color Name: Charcoal
   Hex Code: 
                            
                            #36454F
                        
   Description: A deep, smoky gray with hints of blue, offering a balanced and neutral base for the timeline layout.

5. Color Name: Dark Olive Green
   Hex Code: 
                            
                            #556B2F
                        
   Description: A robust, earthy green that adds a sense of resilience and growth to the timeline, symbolizing progress and development.

6. Color Name: Deep Sienna
   Hex Code: 
                            
                            #3C1414
                        
   Description: A rich, dark brown with a touch of red, evoking a sense of stability and heritage, ideal for grounding the timeline structure.