The hex color #3d23a2 is a dark color. The web-safe version is Hex
#333399. A complementary color is
#C2DC5D. The grayscale version is
#565656. A 20% lighter version of the original color is
#7056D5, and Hex
#0A006F is the 20% darker color. If the color is saturated by 10%, you get
#3B1EAA. If the color is desaturated by 10%, the color
#40289A is obtained.