The hex color #3f416c is a dark color. The web-safe version is Hex
#333366. A complementary color is
#C0BE93. The grayscale version is
#4F4F4F. A 20% lighter version of the original color is
#72749F, and Hex
#0C0E39 is the 20% darker color. If the color is saturated by 10%, you get
#3D406F. If the color is desaturated by 10%, the color
#414269 is obtained.