The hex color #a33f1a is a dark color. The web-safe version is Hex
#993333. A complementary color is
#5CC0E5. The grayscale version is
#545454. A 20% lighter version of the original color is
#D6724D, and Hex
#700C00 is the 20% darker color. If the color is saturated by 10%, you get
#AB3D14. If the color is desaturated by 10%, the color
#9B4120 is obtained.