The hex color #40139c is a dark color. The web-safe version is Hex
#330099. A complementary color is
#BFEC63. The grayscale version is
#505050. A 20% lighter version of the original color is
#7346CF, and Hex
#0D0069 is the 20% darker color. If the color is saturated by 10%, you get
#3E0DA4. If the color is desaturated by 10%, the color
#421994 is obtained.