Mysterious:
* Enigmatic: Suggesting a sense of mystery and hidden secrets.
* Luminous: This can describe how darkness can make other sources of light appear more vibrant.
* Ethereal: Refers to something that is otherworldly, delicate, and often beautiful.
* Sublime: Evokes awe and wonder, often associated with vast and powerful natural phenomena.
Peaceful:
* Serene: Describes a state of tranquility and calmness.
* Tranquil: Similar to serene, suggesting a sense of peace and quiet.
* Intimate: Can be used to describe how darkness can feel cozy and comforting.
* Still: Emphasizes the lack of movement and the quiet stillness of darkness.
Other:
* Restful: Emphasizing how darkness can promote sleep and relaxation.
* Dreamy: Suggests a world of imagination and possibility.
* Protective: Darkness can offer a sense of security and privacy.
* Powerful: Darkness can be seen as a force of nature with its own strength and beauty.
It's important to note that the connotation of "darkness" can vary greatly depending on context. The same word can be perceived as positive or negative depending on individual experiences and cultural associations.
Ultimately, the best word to describe darkness depends on the specific feeling you want to evoke.