The hex color #3d346e is a dark color. The web-safe version is Hex
#333366. A complementary color is
#C2CB91. The grayscale version is
#4A4A4A. A 20% lighter version of the original color is
#7067A1, and Hex
#0A013B is the 20% darker color. If the color is saturated by 10%, you get
#3C3272. If the color is desaturated by 10%, the color
#3E366A is obtained.