Based on the provided primary, secondary, and tertiary colors, I have created a color palette with complementary colors and shades:

1. Zen Green
   - Hex: 
                            
                            #7DCEA0
                        
   - Description: A calming and fresh green that represents growth and harmony.

2. Slate Serenity
   - Hex: 
                            
                            #8395A7
                        
   - Description: A tranquil and serene blue-gray that evokes a sense of peace and stability.

3. Tranquil Ivory
   - Hex: 
                            
                            #F8F4E3
                        
   - Description: A soft and warm ivory that brings a sense of calm and purity.

4. Misty Lilac
   - Hex: 
                            
                            #C7B8DD
                        
   - Description: A gentle and elegant purple-gray that adds a touch of sophistication to the palette.

5. Whispering Wheat
   - Hex: 
                            
                            #EADCA6
                        
   - Description: A muted and comforting golden beige that complements the overall tranquility of the palette.

6. Serene Sky
   - Hex: 
                            
                            #B4DCE7
                        
   - Description: A light and airy sky blue that enhances the peaceful and soothing atmosphere of the palette.

This color palette combines the freshness of green, the tranquility of blue-gray, and the softness of ivory, along with complementary shades to create a harmonious and calming visual experience.