The hex color #3d15cf is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#C2EA30. The grayscale version is
#606060. A 20% lighter version of the original color is
#7048FF, and Hex
#0A009C is the 20% darker color. If the color is saturated by 10%, you get
#390DDA. If the color is desaturated by 10%, the color
#411DC4 is obtained.