The hex color #1d1c3c is a dark color. The web-safe version is Hex
#333333. A complementary color is
#E2E3C3. The grayscale version is
#272727. A 20% lighter version of the original color is
#504F6F, and Hex
#000009 is the 20% darker color. If the color is saturated by 10%, you get
#1C1B3E. If the color is desaturated by 10%, the color
#1E1D3A is obtained.