The hex color #30331d is a dark color. The web-safe version is Hex
#333333. A complementary color is
#CFCCE2. The grayscale version is
#2B2B2B. A 20% lighter version of the original color is
#636650, and Hex
#000000 is the 20% darker color. If the color is saturated by 10%, you get
#31341C. If the color is desaturated by 10%, the color
#2F321E is obtained.