Based on the given primary, secondary, and tertiary colors, as well as the request for 6 colors in total, here is a color palette:

1. Terracotta Bliss
   - Hex Code: 
          
          #E27D60
       
   - Description: A warm and earthy terracotta shade, reminiscent of sun-kissed clay.

2. Denim Blue
   - Hex Code: 
          
          #4A6CC3
       
   - Description: A deep and rich blue hue, reflecting the color of classic denim.

3. Fresh Linen
   - Hex Code: 
          
          #F0EFEF
       
   - Description: A clean and crisp off-white shade, evoking the feeling of freshly laundered linen.

4. Sandstone
   - Hex Code: 
          
          #D8BFAA
       
   - Description: A light and neutral beige tone, resembling the color of smooth sandstone.

5. Sage Green
   - Hex Code: 
          
          #A3C18F
       
   - Description: A calming and natural green shade, reminiscent of fragrant sage leaves.

6. Sunset Gold
   - Hex Code: 
          
          #E3B505
       
   - Description: A warm and vibrant golden hue, capturing the glow of a sunset.

This palette incorporates the warm tones of terracotta and sunset, balanced with the cool blues and neutrals, creating a versatile and harmonious color scheme.