The hex color #0c1f2c is a dark color. The web-safe version is Hex
#003333. A complementary color is
#F3E0D3. The grayscale version is
#1D1D1D. A 20% lighter version of the original color is
#3F525F, and Hex
#000000 is the 20% darker color. If the color is saturated by 10%, you get
#0A1F2E. If the color is desaturated by 10%, the color
#0E1F2B is obtained.