The hex color #0c3ddd is a dark color. The web-safe version is Hex
#0033CC. A complementary color is
#F3C222. The grayscale version is
#626262. A 20% lighter version of the original color is
#3F70FF, and Hex
#000AAA is the 20% darker color. If the color is saturated by 10%, you get
#0339E9. If the color is desaturated by 10%, the color
#1541D1 is obtained.