The hex color #1d1a2c is a dark color. The web-safe version is Hex
#333333. A complementary color is
#E2E5D3. The grayscale version is
#212121. A 20% lighter version of the original color is
#504D5F, and Hex
#000000 is the 20% darker color. If the color is saturated by 10%, you get
#1D192D. If the color is desaturated by 10%, the color
#1D1B2B is obtained.