Here’s an updated palette featuring a deep red that is positioned between burgundy and dark red:

 < Harmonious Autumn Wedding Palette With Adjusted Deep Red> 
1. Sage Green - 
                            
                            #7D9883
                         - A soft, muted sage green that complements the other colors, adding a tranquil and natural touch to the palette.
2. Dark Green - 
                            
                            #0A3428
                         - A rich, deep green that adds sophistication and depth to the palette while evoking the beauty of nature.
3. Blush Pink - 
                            
                            #D4A8A4
                         - A gentle pink that adds a soft touch and enhances the romantic aspect of the palette.
4. Burnt Terracotta - 
                            
                            #B2554C
                         - A warm, rich burnt terracotta that enhances the earthy tones and complements the overall warmth of the palette.
5. Deep Rust - 
                            
                            #B7410E
                         - A rich, deep rust color that adds a touch of warmth and elegance, enhancing the palette's autumnal feel.
6. Burgundy - 
                            
                            #590606
                         - A deep, dark red that enhances elegance and warmth, providing a bold statement perfect for an autumn wedding.
7. Rich Red - 
                            
                            #6A0B0B
                         - A deep red that sits perfectly between burgundy and dark red, adding depth and richness while harmonizing with the other colors.

The new deep red color ( #6A0B0B ) adds the desired depth while remaining harmonious with the other tones in the palette.

Would you like to explore how to incorporate these colors into specific wedding design elements, such as floral arrangements, decor, or stationery?