The hex color #3f1cb7 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#C0E348. The grayscale version is
#5B5B5B. A 20% lighter version of the original color is
#724FEA, and Hex
#0C0084 is the 20% darker color. If the color is saturated by 10%, you get
#3C16C0. If the color is desaturated by 10%, the color
#4222AE is obtained.