<Muted Earthy History Map Markers>
1. Earth Brown - 
                            
                            #7A4B22
                         - A softer, warm brown that grounds the palette with a subtle richness, ideal for historical contexts.
2. Olive Green - 
                            
                            #5A7B29
                         - A muted olive green that symbolizes growth and nature, representing ancient civilizations with a softer touch.
3. Terracotta - 
                            
                            #C5723D
                         - A gentle terracotta that evokes rustic pottery while maintaining a less intense hue.
4. Pale Golden Sand - 
                            
                            #D2B96D
                         - A soft, muted yellow that reflects sunlight and the sands of time, adding a subtle warmth without overwhelming brightness.
5. Dusty Slate Gray - 
                            
                            #A7A8A7
                         - A lighter gray that provides a modern feel while symbolizing stone and endurance, with reduced contrast.
6. Muted Rust Red - 
                            
                            #B76347
                         - A softer reddish-brown that reflects the aged patina of historical artifacts without being too bold.
7. Dusty Olive - 
                            
                            #A89C7C
                         - A muted olive tone that conveys a sense of history and natural landscapes with gentle softness.
8. Soft Clay Gray - 
                            
                            #C1B2A1
                         - A light gray with clay undertones that represents ancient pottery and remains in a subtle way.
9. Deep Forest Green - 
                            
                            #4B6B4C
                         - A muted deep green that symbolizes the richness of nature and the longevity of history without a sharp contrast.

This muted earthy color palette reduces the contrast between colors while maintaining a cohesive and historical feel. Each hue is selected to evoke a sense of warmth and subtlety, making the map markers visually harmonious.

Would you like to adjust any specific colors further, or do you have any other preferences for this palette? Additionally, are there particular historical categories you want to represent with these muted tones?