The hex color #1d3d2a is a dark color. The web-safe version is Hex
#333333. A complementary color is
#E2C2D5. The grayscale version is
#2C2C2C. A 20% lighter version of the original color is
#50705D, and Hex
#000A00 is the 20% darker color. If the color is saturated by 10%, you get
#1C3F2A. If the color is desaturated by 10%, the color
#1F3B2A is obtained.