The hex color #12364c is a dark color. The web-safe version is Hex
#003333. A complementary color is
#EDC9B3. The grayscale version is
#313131. A 20% lighter version of the original color is
#45697F, and Hex
#000319 is the 20% darker color. If the color is saturated by 10%, you get
#0F364F. If the color is desaturated by 10%, the color
#153649 is obtained.