To complement your existing colors of aubergine, yellow, and gold for your café’s bar and wallpaper, here’s a refined color palette that maintains harmony while adding new dimensions:

 <Café Comfort> 
1. Aubergine - 
                            
                            #6A0DAD
                         - A deep, rich purple that evokes a sense of luxury and sophistication.
2. Yellow - 
                            
                            #FFD700
                         - A vibrant, sunny yellow that brings warmth and positivity, reminiscent of sunshine.
3. Gold - 
                            
                            #FFD700
                         - A metallic yellow that symbolizes opulence and prestige, often associated with wealth.
4. Soft Cream - 
                            
                            #FFFDD0
                         - A warm, soft cream that adds a light and airy feel, creating a cozy and inviting atmosphere.
5. Warm Taupe - 
                            
                            #D2B48C
                         - A neutral, earthy taupe that grounds the palette and adds sophistication, complementing the rich colors.
6. Dusty Blue - 
                            
                            #A4C8E1
                         - A muted blue that introduces a calming contrast to the warm tones, enhancing the overall elegance.

This palette maintains the luxurious vibe while introducing soft and earthy tones that can create a warm, welcoming café environment. The cream and taupe add comfort, while the dusty blue provides a refreshing contrast.

Are there any specific materials or textures you plan to use for the bar and wallpaper? Also, do you have a specific atmosphere in mind, such as cozy, modern, or rustic?