The hex color #404b93 is a dark color. The web-safe version is Hex
#333399. A complementary color is
#BFB46C. The grayscale version is
#5F5F5F. A 20% lighter version of the original color is
#737EC6, and Hex
#0D1860 is the 20% darker color. If the color is saturated by 10%, you get
#3D4998. If the color is desaturated by 10%, the color
#434D8E is obtained.