The hex color #400e9c is a dark color. The web-safe version is Hex
#330099. A complementary color is
#BFF163. The grayscale version is
#4E4E4E. A 20% lighter version of the original color is
#7341CF, and Hex
#0D0069 is the 20% darker color. If the color is saturated by 10%, you get
#3F08A4. If the color is desaturated by 10%, the color
#411494 is obtained.