<Leather Handbag Palette Further Expanded> 
1. Deep Brown - 
                            
                            #4E3B31
                         - A luxurious dark brown that mimics the look of rich, high-quality leather.
2. Cognac - 
                            
                            #D19A6A
                         - A warm, medium brown with orange undertones, reminiscent of classic leather handbags.
3. Olive Green - 
                            
                            #A3A863
                         - A muted green that adds an earthy touch, perfect for a sophisticated handbag look.
4. Charcoal Gray - 
                            
                            #4A4A4A
                         - A sleek, versatile gray that pairs well with any leather color, offering modern elegance.
5. Dusty Rose - 
                            
                            #D1B2B9
                         - A soft pinkish hue that adds a feminine touch, ideal for trendy leather accessories.
6. Tan - 
                            
                            #D3B05A
                         - A light, neutral brown that provides a soft contrast, suitable for casual leather items.
7. Burgundy - 
                            
                            #7C2A3E
                         - A deep, rich red that adds a bold statement, perfect for high-end leather handbags.
8. Soft Black - 
                            
                            #2C2C2C
                         - A gentle black that offers a sophisticated, understated option for classic leather designs.
9. Cream - 
                            
                            #F5F1E6
                         - A light, warm beige that adds brightness and softness, ideal for chic leather accents.
10. Slate Blue - 
                            
                            #6A7B8A
                         - A cool, muted blue that introduces a modern twist, suitable for unique handbag designs.
11. Mustard Yellow - 
                            
                            #D1C74D
                         - A vibrant, warm yellow that energizes the palette, perfect for a trendy pop of color.
12. Forest Green - 
                            
                            #4B6F4D
                         - A rich green that adds depth and sophistication, ideal for nature-inspired leather pieces.

This further expanded leather handbag palette introduces additional colors that enhance versatility and creativity for handbag designs. The combination of earthy tones, soft accents, and a few vibrant pops allows for a wide range of stylish options.

Are there specific styles or themes you’re planning to use this palette for, or would you like to focus on a particular color combination?