Here is a color palette based on your request, including a complementary seventh color:

 <Complementary Palette> 
1. Golden Yellow - 
                            
                            #EBC750
                         - A vibrant, warm yellow that adds brightness and energy.
2. Lavender Purple - 
                            
                            #BF74D0
                         - A soft, soothing purple that adds a touch of elegance.
3. Sky Blue - 
                            
                            #7599C4
                         - A calm, serene blue reminiscent of clear skies.
4. Rose Pink - 
                            
                            #C581AB
                         - A gentle, romantic pink that brings warmth to the palette.
5. Lime Green - 
                            
                            #9FC458
                         - A fresh, lively green that symbolizes renewal and growth.
6. Terracotta Orange - 
                            
                            #DE7740
                         - A warm, earthy orange that adds a grounding effect.
7. Deep Teal - 
                            
                            #007B7F
                         - A rich, cool teal that creates a striking contrast and balances the warmth of the palette.

This palette combines vibrant and soft hues, creating a dynamic yet harmonious look. The addition of the deep teal as the seventh color complements the warmth of the terracotta orange while providing a cool contrast.

What type of project are you planning to use this color palette for? Would you like suggestions on how to apply these colors effectively?