<Earthy Elegance Plus> 
1. Earthy Olive - 
                            
                            #8C9A5B
                         - A muted olive green that brings a touch of nature and calmness.
2. Warm Terracotta - 
                            
                            #D17A3D
                         - A rich terracotta that adds a warm and inviting feel to the palette.
3. Sandy Beige - 
                            
                            #E6D8B5
                         - A soft beige that provides a neutral background, ensuring readability and warmth.
4. Dusty Rose - 
                            
                            #C2A1A8
                         - A gentle rose that introduces a hint of color while remaining subtle and easy on the eyes.
5. Slate Gray - 
                            
                            #7A8D8F
                         - A cool gray that grounds the palette and enhances legibility without being harsh.
6. Accent Mustard - 
                            
                            #C2B280
                         - A vibrant mustard that stands out, perfect for drawing attention without clashing with earthy tones.
7. Hyperlink Blue - 
                            
                            #4A8BC2
                         - A soft blue that is easily readable and visually distinct for hyperlinks.
8. Followed Hyperlink Gray - 
                            
                            #A1B2B4
                         - A muted gray that indicates followed hyperlinks without being too bold. 

This updated palette maintains the earthy tones while adding an accent color and specific colors for hyperlinks, ensuring functionality and aesthetics in your Excel theme.

What is the primary purpose of your Excel project? Would you like any additional colors or modifications for specific elements?