The hex color #381c4d is a dark color. The web-safe version is Hex
#333366. A complementary color is
#C7E3B2. The grayscale version is
#363636. A 20% lighter version of the original color is
#6B4F80, and Hex
#05001A is the 20% darker color. If the color is saturated by 10%, you get
#38194F. If the color is desaturated by 10%, the color
#381F4B is obtained.