The hex color #3d2d5c is a dark color. The web-safe version is Hex
#333366. A complementary color is
#C2D2A3. The grayscale version is
#424242. A 20% lighter version of the original color is
#70608F, and Hex
#0A0029 is the 20% darker color. If the color is saturated by 10%, you get
#3D2B5F. If the color is desaturated by 10%, the color
#3E2F59 is obtained.