The hex color #4b587e is a dark color. The web-safe version is Hex
#336666. A complementary color is
#B4A781. The grayscale version is
#606060. A 20% lighter version of the original color is
#7E8BB1, and Hex
#18254B is the 20% darker color. If the color is saturated by 10%, you get
#495781. If the color is desaturated by 10%, the color
#4D597B is obtained.