The hex color #3d1c2c is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C2E3D3. The grayscale version is
#2C2C2C. A 20% lighter version of the original color is
#704F5F, and Hex
#0A0000 is the 20% darker color. If the color is saturated by 10%, you get
#3F1A2C. If the color is desaturated by 10%, the color
#3B1E2C is obtained.