The hex color #503f3c is a dark color. The web-safe version is Hex
#663333. A complementary color is
#AFC0C3. The grayscale version is
#444444. A 20% lighter version of the original color is
#83726F, and Hex
#1D0C09 is the 20% darker color. If the color is saturated by 10%, you get
#513F3B. If the color is desaturated by 10%, the color
#4F3F3D is obtained.