The hex color #3d2ac0 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#C2D53F. The grayscale version is
#626262. A 20% lighter version of the original color is
#705DF3, and Hex
#0A008D is the 20% darker color. If the color is saturated by 10%, you get
#3924C9. If the color is desaturated by 10%, the color
#4130B7 is obtained.