1. Earthy Hues - 
                            
                            #8B5A2B
                        , 
                            
                            #228B22
                        , 
                            
                            #ADD8E6
                        , 
                            
                            #F2D7D5
                        
   A combination of warm browns and cool blues that evoke the natural beauty of the earth. Perfect for an earth day poster that emphasizes the importance of preserving our planet's resources.

2. Ocean Blues - 
                            
                            #0077be
                        , 
                            
                            #00b3e6
                        , 
                            
                            #33ccff
                        , 
                            
                            #8fdaff
                        
   Shades of blue that mimic the colors of the ocean, this color palette is ideal for an earth day poster that focuses on marine conservation and protecting the world's oceans.

3. Green Planet - 
                            
                            #4CAF50
                        , 
                            
                            #8BC34A
                        , 
                            
                            #CDDC39
                        , 
                            
                            #FFEB3B
                        
   A vibrant combination of greens and yellows that represent the lush foliage of the earth, this color palette is perfect for an earth day poster that emphasizes the importance of sustainable living and reducing our carbon footprint.

4. Earth Tones - 
                            
                            #964B00
                        , 
                            
                            #A0522D
                        , 
                            
                            #D2B48C
                        , 
                            
                            #F5DEB3
                        
   Rich browns and warm tans that evoke the natural beauty of the earth, this color palette is perfect for an earth day poster that focuses on the importance of preserving our planet's resources and protecting its biodiversity.

5. Rainbow Bright - 
                            
                            #ff0000
                        , 
                            
                            #ff7f00
                        , 
                            
                            #ffff00
                        , 
                            
                            #00ff00
                        , 
                            
                            #0000ff
                        , 
                            
                            #4b0082
                        , 
                            
                            #8f00ff
                        
   A vibrant rainbow of colors that represent the diversity of life on earth, this color palette is perfect for an earth day poster that celebrates the beauty and wonder of our planet.