Color Palette:

1. Color Name: Midnight Blue
   Hex Code: 
                            
                            #003366
                        
   Description: A deep blue hue resembling the night sky, perfect for creating a bold and sophisticated look on the poster.

2. Color Name: Turquoise
   Hex Code: 
                            
                            #40E0D0
                        
   Description: A refreshing and calming turquoise shade that adds a pop of color and a sense of tranquility to the design.

3. Color Name: Lavender
   Hex Code: 
                            
                            #E6E6FA
                        
   Description: A soft and elegant lavender tone that brings a touch of femininity and sophistication to the overall palette.

4. Color Name: Steel Gray
   Hex Code: 
                            
                            #808080
                        
   Description: A versatile and modern steel gray color that complements the other hues and adds a contemporary feel to the poster design.

5. Color Name: Mint Green
   Hex Code: 
                            
                            #98FB98
                        
   Description: A light and fresh mint green shade that adds a hint of nature and vitality to the color scheme, creating a harmonious balance.

6. Color Name: Coral
   Hex Code: 
                            
                            #FF7F50
                        
   Description: A vibrant coral color that injects energy and warmth into the palette, creating a dynamic and engaging visual impact on the graphic design poster.