The hex color #a43c33 is a dark color. The web-safe version is Hex
#993333. A complementary color is
#5BC3CC. The grayscale version is
#5C5C5C. A 20% lighter version of the original color is
#D76F66, and Hex
#710900 is the 20% darker color. If the color is saturated by 10%, you get
#AB392F. If the color is desaturated by 10%, the color
#9D3F37 is obtained.