The hex color #1d3a2a is a dark color. The web-safe version is Hex
#333333. A complementary color is
#E2C5D5. The grayscale version is
#2B2B2B. A 20% lighter version of the original color is
#506D5D, and Hex
#000700 is the 20% darker color. If the color is saturated by 10%, you get
#1C3C2A. If the color is desaturated by 10%, the color
#1E392A is obtained.