Mörk can also modify a colour adjective (such as blå or grön), in which case you simply combine both words to make a compound adjective, like mörkblå (dark blue) or mörkgrön (dark green), in contrast to English where both words would be kept separate. Like in English, mörk can be used metaphorically to talk about something sinister, not completely rational or understood, for example mörk magi (dark magic or black magic) or mörk materia (dark matter). And it can mean "gloomy" or "negative", for example mörka tider (dark times) or the phrases teckna en mörk bild (to paint a gloomy picture) or kasta en mörk skugga över (to cast a dark cloud over).