The hex color #23366c is a dark color. The web-safe version is Hex
#333366. A complementary color is
#DCC993. The grayscale version is
#424242. A 20% lighter version of the original color is
#56699F, and Hex
#000339 is the 20% darker color. If the color is saturated by 10%, you get
#203570. If the color is desaturated by 10%, the color
#263768 is obtained.