The hex color #3d157a is a dark color. The web-safe version is Hex
#330066. A complementary color is
#C2EA85. The grayscale version is
#444444. A 20% lighter version of the original color is
#7048AD, and Hex
#0A0047 is the 20% darker color. If the color is saturated by 10%, you get
#3C107F. If the color is desaturated by 10%, the color
#3E1A75 is obtained.