<Dark Nostalgia> 
1. Deep Maroon - 
                            
                            #7A2A2A
                         - A dark, rich red reminiscent of dried blood, evoking feelings of sadness and nostalgia. 
2. Charcoal Grey - 
                            
                            #3C3C3C
                         - A deep, muted grey that adds a sense of gloom and coldness to the palette. 
3. Midnight Blue - 
                            
                            #1A1F4D
                         - A dark blue that captures the essence of a cold, starless night, enhancing the feeling of isolation. 
4. Ashen Black - 
                            
                            #1C1C1C
                         - An almost complete absence of color, representing despair and the void of emotion. 
5. Dusty Olive - 
                            
                            #4E4B37
                         - A muted greenish-brown that brings a touch of nature's decay, adding to the nostalgic and somber mood. 

This color palette embraces a heavy, melancholic vibe with shades that evoke feelings of nostalgia, darkness, and coldness. It can be ideal for projects aiming to communicate deep, emotional themes or to create an atmosphere that feels heavy and introspective.

What type of project are you considering using this palette for? Do you have specific elements or designs in mind?