The hex color #3e16d0 is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#C1E92F. The grayscale version is
#616161. A 20% lighter version of the original color is
#7149FF, and Hex
#0B009D is the 20% darker color. If the color is saturated by 10%, you get
#3A0EDB. If the color is desaturated by 10%, the color
#421EC5 is obtained.