The hex color #153c6c is a dark color. The web-safe version is Hex
#003366. A complementary color is
#EAC393. The grayscale version is
#3F3F3F. A 20% lighter version of the original color is
#486F9F, and Hex
#000939 is the 20% darker color. If the color is saturated by 10%, you get
#113C71. If the color is desaturated by 10%, the color
#193C68 is obtained.