The hex color #1d3b2b is a dark color. The web-safe version is Hex
#333333. A complementary color is
#E2C4D4. The grayscale version is
#2C2C2C. A 20% lighter version of the original color is
#506E5E, and Hex
#000800 is the 20% darker color. If the color is saturated by 10%, you get
#1C3D2B. If the color is desaturated by 10%, the color
#1E392B is obtained.