Color Palette:

1. Blood Red (
                            
                            #FF0000
                        ) - This vibrant and intense red is the color of fresh blood, symbolizing violence and fear, making it a perfect fit for a horror movie palette.

2. Midnight Black (
                            
                            #000000
                        ) - The darkest shade of black, this color represents the unknown and the mysterious. It sets a suspenseful and eerie mood for a horror movie.

3. Ghostly White (
                            
                            #FFFFFF
                        ) - This pure white color signifies innocence and purity, but in the context of horror movies, it can be associated with ghosts and apparitions.

4. Poison Green (
                            
                            #00FF00
                        ) - This bright and toxic green is often associated with poison and hazardous substances, making it a fitting color for a horror movie palette.

5. Shadowy Grey (
                            
                            #808080
                        ) - This dull and neutral color represents ambiguity and uncertainty, which can create an unsettling atmosphere in a horror movie.

Overall Palette Description: This horror movie color palette combines intense and vibrant colors with dark and mysterious shades to create a sense of fear and unease. It is a perfect fit for any horror movie that wants to set the mood for a terrifying experience.