The hex color #220c3c is a dark color. The web-safe version is Hex
#330033. A complementary color is
#DDF3C3. The grayscale version is
#232323. A 20% lighter version of the original color is
#553F6F, and Hex
#000009 is the 20% darker color. If the color is saturated by 10%, you get
#220A3E. If the color is desaturated by 10%, the color
#220E3A is obtained.