The hex color #1d3b2f is a dark color. The web-safe version is Hex
#333333. A complementary color is
#E2C4D0. The grayscale version is
#2D2D2D. A 20% lighter version of the original color is
#506E62, and Hex
#000800 is the 20% darker color. If the color is saturated by 10%, you get
#1B3C2F. If the color is desaturated by 10%, the color
#1F3A2F is obtained.