The hex color #0f18a7 is a dark color. The web-safe version is Hex
#000099. A complementary color is
#F0E758. The grayscale version is
#454545. A 20% lighter version of the original color is
#424BDA, and Hex
#000074 is the 20% darker color. If the color is saturated by 10%, you get
#0A14B1. If the color is desaturated by 10%, the color
#141C9D is obtained.