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.