Color Palette: Cold Autumn Night

1. Midnight Blue 
   Hex Code: 
                            
                            #003366
                        
   A deep, dark blue reminiscent of the night sky on a cold autumn night.

2. Slate Gray
   Hex Code: 
                            
                            #708090
                        
   A cool, muted gray like the stones on a quiet autumn evening.

3. Frost White
   Hex Code: 
                            
                            #E6E6FA
                        
   A soft, icy white that reflects the chill in the autumn air.

4. Steel Blue
   Hex Code: 
                            
                            #4682B4
                        
   A metallic blue with hints of gray, like the steel structures on a cold night.

5. Charcoal
   Hex Code: 
                            
                            #36454F
                        
   A dark, smoky gray that evokes the shadows cast by autumn trees.

6. Arctic Blue
   Hex Code: 
                            
                            #00BFFF
                        
   A bright, icy blue that brings to mind the frozen landscapes of a cold autumn night.

7. Silver
   Hex Code: 
                            
                            #C0C0C0
                        
   A shimmering silver hue that captures the moonlight on a crisp autumn evening.

8. Navy
   Hex Code: 
                            
                            #000080
                        
   A deep, rich navy blue that mirrors the depths of a cold autumn night sky.

9. Glacier Gray
   Hex Code: 
                            
                            #B0C4DE
                        
   A cool, pale gray like the frost that covers the ground on a chilly autumn morning.

10. Storm Cloud
    Hex Code: 
                            
                            #778899
                        
    A moody gray-blue that hints at the approaching storm on a cold autumn night.

11. Ice Blue
    Hex Code: 
                            
                            #ADD8E6
                        
    A light, cool blue reminiscent of frozen water on a frosty autumn day.

12. Midnight Black
    Hex Code: 
                            
                            #191970
                        
    A deep, velvety black that symbolizes the darkness of a cold autumn night.