The hex color #3d4367 is a dark color. The web-safe version is Hex
#333366. A complementary color is
#C2BC98. The grayscale version is
#4D4D4D. A 20% lighter version of the original color is
#70769A, and Hex
#0A1034 is the 20% darker color. If the color is saturated by 10%, you get
#3B426A. If the color is desaturated by 10%, the color
#3F4464 is obtained.