Our Black Nature Friendly Candle Color Block will produce shades in between a gray to dark charcoal. All of our Nature Friendly Color Blocks are REACH compliant and versatile for achieving a wide array of colors for your wax creations. You can produce different shades by adjusting the amount of color that you use. Keep in mind colors will vary with fragrance use and different types of wax. Each block weighs approximately 1/2 oz. to 1 oz. Nature Friendly Color Blocks are intended for candle making only and not bath/body products.