Color Palette: Retro Space Movie Poster

1. Cosmic Blue 
   Hex: 
                            
                            #1A2C4F
                        
   A deep, mysterious blue like the vastness of space, perfect for creating a moody and atmospheric backdrop for a retro space movie poster.

2. Galactic Gold 
   Hex: 
                            
                            #FFD700
                        
   A rich, warm gold reminiscent of the stars and celestial bodies, adding a touch of glamour and nostalgia to the palette.

3. Nebula Purple 
   Hex: 
                            
                            #6A0DAD
                        
   A vibrant, otherworldly purple that captures the essence of cosmic wonders and sci-fi adventures, creating a sense of mystery and excitement.

4. Retro Red 
   Hex: 
                            
                            #FF3F34
                        
   An intense, retro red that brings a sense of urgency and danger, reminiscent of classic space movie posters from the past.

5. Space Silver 
   Hex: 
                            
                            #C0C0C0
                        
   A cool, metallic silver that adds a futuristic and technological touch to the palette, symbolizing the advancements and discoveries of space exploration.

This color palette captures the essence of retro space movie posters, combining deep blues, cosmic golds, vibrant purples, intense reds, and futuristic silvers to evoke the wonder and excitement of interstellar adventures.