While there's no definitive answer to this question, as individual preferences and cultural norms vary, some colors are generally perceived as more alluring and attractive. Research suggests that red is a color that often evokes feelings of passion, excitement, and confidence, which can be associated with sexiness.
Other colors like black and dark blue can also be seen as sophisticated and mysterious, adding to a sense of intrigue. However, it's important to note that the impact of color can also depend on factors such as personal style, skin tone, and the context in which the color is worn.
For instance, a study found that black and red clothing received higher ratings for body attractiveness and perceived slimness, while grey and green clothes were associated with lower attractiveness and larger perceived body size. Ultimately, the "sexiest" color is subjective and can vary based on individual tastes and preferences.
