Here is a single color palette for a background movie website with 6 colors:

1. Color Name: Midnight Blue
   Hex Code: 
                            
                            #191970
                        
   Description: This deep blue color resembles the night sky, creating a sense of mystery and elegance. It can be used as the primary background color for the website.

2. Color Name: Silver
   Hex Code: 
                            
                            #C0C0C0
                        
   Description: This light grayish color adds a touch of sophistication and neutrality to the palette. It can be used for text or subtle accents on the website.

3. Color Name: Gold
   Hex Code: 
                            
                            #FFD700
                        
   Description: This warm, metallic gold color adds a touch of luxury and richness to the palette. It can be used for highlights or important elements on the website.

4. Color Name: Crimson
   Hex Code: 
                            
                            #DC143C
                        
   Description: This vibrant red color creates a sense of excitement and intensity. It can be used for attention-grabbing buttons or key elements on the website.

5. Color Name: Ivory
   Hex Code: 
                            
                            #FFFFF0
                        
   Description: This off-white color evokes a sense of elegance and cleanliness. It can be used as an alternative background color or for subtle accents on the website.

6. Color Name: Forest Green
   Hex Code: 
                            
                            #228B22
                        
   Description: This deep green color brings a touch of nature and freshness to the palette. It can be used for highlighting specific sections or elements related to outdoor or environmental themes on the website.

These 6 colors create a visually appealing and versatile palette for a background movie website, providing a range of tones for various design elements.