The hex color #0c12ab is a dark color. The web-safe version is Hex
#000099. A complementary color is
#F3ED54. The grayscale version is
#434343. A 20% lighter version of the original color is
#3F45DE, and Hex
#000078 is the 20% darker color. If the color is saturated by 10%, you get
#070DB5. If the color is desaturated by 10%, the color
#1217A1 is obtained.