The hex color #3e15ea is a dark color. The web-safe version is Hex
#3300FF. A complementary color is
#C1EA15. The grayscale version is
#6A6A6A. A 20% lighter version of the original color is
#7148FF, and Hex
#0B00B7 is the 20% darker color. If the color is saturated by 10%, you get
#3A0DF7. If the color is desaturated by 10%, the color
#421DDD is obtained.