The hex color #21441c is a dark color. The web-safe version is Hex
#333333. A complementary color is
#DEBBE3. The grayscale version is
#2B2B2B. A 20% lighter version of the original color is
#54774F, and Hex
#001100 is the 20% darker color. If the color is saturated by 10%, you get
#20471B. If the color is desaturated by 10%, the color
#22421E is obtained.