The hex color #a43c4b is a dark color. The web-safe version is Hex
#993333. A complementary color is
#5BC3B4. The grayscale version is
#646464. A 20% lighter version of the original color is
#D76F7E, and Hex
#710918 is the 20% darker color. If the color is saturated by 10%, you get
#AA3849. If the color is desaturated by 10%, the color
#9E404D is obtained.