The hex color #bc4a3a is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#43B5C5. The grayscale version is
#6B6B6B. A 20% lighter version of the original color is
#EF7D6D, and Hex
#891707 is the 20% darker color. If the color is saturated by 10%, you get
#C44735. If the color is desaturated by 10%, the color
#B44D3F is obtained.