The hex color #405a7c is a dark color. The web-safe version is Hex
#336666. A complementary color is
#BFA583. The grayscale version is
#5D5D5D. A 20% lighter version of the original color is
#738DAF, and Hex
#0D2749 is the 20% darker color. If the color is saturated by 10%, you get
#3D5A7F. If the color is desaturated by 10%, the color
#435A79 is obtained.