<Expanded Accent Colors for Monochrome> 
1. Teal - 
                            
                            #008080
                         - A calming, rich teal that adds a refreshing pop of color and a touch of sophistication. 
2. Mustard Yellow - 
                            
                            #FFDB58
                         - A warm, muted yellow that creates a cheerful contrast, bringing warmth and energy. 
3. Coral - 
                            
                            #FF6F61
                         - A vibrant coral that introduces warmth and playfulness, creating a lively dynamic against the monochrome base. 
4. Emerald Green - 
                            
                            #50C878
                         - A luxurious green that evokes a sense of nature and tranquility, offering a striking contrast. 
5. Burgundy - 
                            
                            #800020
                         - A deep red that adds a dramatic flair and richness, perfect for creating a cozy atmosphere. 
6. Navy Blue - 
                            
                            #001F3F
                         - A deep navy that provides a classic, sophisticated contrast to the monochrome palette. 
7. Lavender - 
                            
                            #E6E6FA
                         - A soft lavender that introduces a gentle touch of color, adding a serene and calming effect. 
8. Burnt Orange - 
                            
                            #CC5500
                         - A warm, earthy orange that brings a cozy and inviting feel to the space. 
9. Rose Gold - 
                            
                            #B76E79
                         - A soft metallic that adds a touch of glamour and warmth, enhancing the overall elegance. 
10. Mint Green - 
                            
                            #98FF98
                         - A fresh and light green that brings a breezy, uplifting vibe, perfect for modern spaces. 
11. Fuchsia - 
                            
                            #FF00FF
                         - A bold and vibrant pink that injects energy and liveliness, making a striking statement. 
12. Slate Blue - 
                            
                            #6A7B9D
                         - A muted blue that offers a cool, calming contrast while maintaining an elegant feel. 
13. Peach - 
                            
                            #FFDAB9
                         - A soft, warm peach that provides a subtle touch of color, creating a welcoming atmosphere. 
14. Olive Green - 
                            
                            #808000
                         - A muted green that adds an earthy tone, perfect for a rustic or natural vibe. 
15. Gold - 
                            
                            #FFD700
                         - A bright, metallic gold that brings luxury and opulence to the design, perfect for accents and highlights. 

This expanded palette introduces a broader range of accent colors to play with, allowing for even more creativity and personalization. Each color is selected to harmonize with the monochrome base while offering unique attributes that can enhance different aspects of the design.

What specific elements or features of your space are you considering highlighting with these accent colors?