The hex color #3e3cc3 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#C1C33C. The grayscale version is
#6A6A6A. A 20% lighter version of the original color is
#716FF6, and Hex
#0B0990 is the 20% darker color. If the color is saturated by 10%, you get
#3A37CC. If the color is desaturated by 10%, the color
#4241BA is obtained.