The hex color #121c6c is a dark color. The web-safe version is Hex
#003366. A complementary color is
#EDE393. The grayscale version is
#333333. A 20% lighter version of the original color is
#454F9F, and Hex
#000039 is the 20% darker color. If the color is saturated by 10%, you get
#0F1A72. If the color is desaturated by 10%, the color
#151E66 is obtained.