The hex color #0f73e3 is a dark color. The web-safe version is Hex
#0066CC. A complementary color is
#F08C1C. The grayscale version is
#777777. A 20% lighter version of the original color is
#42A6FF, and Hex
#0040B0 is the 20% darker color. If the color is saturated by 10%, you get
#0573EE. If the color is desaturated by 10%, the color
#1973D8 is obtained.