The hex color #247d9c is a dark color. The web-safe version is Hex
#336699. A complementary color is
#DB8263. The grayscale version is
#6A6A6A. A 20% lighter version of the original color is
#57B0CF, and Hex
#004A69 is the 20% darker color. If the color is saturated by 10%, you get
#1D7FA1. If the color is desaturated by 10%, the color
#2B7B97 is obtained.