Color Palette for Gaming Session Coordination Web App:

1. Color Name: Electric Blue
   Hex Code: 
                            
                            #00FFFF
                        
   Description: A vibrant and eye-catching blue color, reminiscent of neon lights. It creates a sense of excitement and energy, perfect for a gaming session coordination web app.

2. Color Name: Dark Crimson
   Hex Code: 
                            
                            #8B0000
                        
   Description: A deep red shade that exudes intensity and passion. It adds a touch of drama and seriousness to the web app, reflecting the competitive nature of gaming sessions.

3. Color Name: Lime Green
   Hex Code: 
                            
                            #00FF00
                        
   Description: A bright and lively green hue that symbolizes growth, freshness, and optimism. It brings a refreshing and energetic vibe to the web app, enhancing the user experience.

4. Color Name: Charcoal Gray
   Hex Code: 
                            
                            #36454F
                        
   Description: A sleek and sophisticated dark gray color that adds a touch of professionalism and elegance to the web app. It provides a solid foundation for the other vibrant colors to stand out.

5. Color Name: Goldenrod
   Hex Code: 
                            
                            #DAA520
                        
   Description: A warm and rich yellow hue, resembling the color of ripe goldenrod flowers. It adds a touch of warmth and positivity to the web app, creating a friendly and inviting atmosphere.

6. Color Name: Deep Purple
   Hex Code: 
                            
                            #800080
                        
   Description: A bold and mysterious purple shade that evokes a sense of creativity and imagination. It adds a touch of intrigue and uniqueness to the web app, making it visually captivating.

This color palette combines vibrant and energetic colors like electric blue and lime green with deeper tones like dark crimson and deep purple. The addition of charcoal gray and goldenrod brings balance and professionalism to the overall design.