Got it! Here’s a revised color palette that includes a vibrant, complementary seventh color that maintains readability with black text but avoids neutrals:

 <Vibrant 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. Bright Coral - 
                            
                            #FF6F61
                         - A bold, lively coral that provides a vibrant contrast and ensures good readability with black text.

This updated palette features a bright coral as the seventh color, which is both vibrant and complementary. Its brightness ensures that black text remains highly readable against it.

What do you think of this selection? Would you like to explore specific combinations for backgrounds or elements in your design?