The hex color #d43f36 is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#2BC0C9. The grayscale version is
#6E6E6E. A 20% lighter version of the original color is
#FF7269, and Hex
#A10C03 is the 20% darker color. If the color is saturated by 10%, you get
#DE3A30. If the color is desaturated by 10%, the color
#CA443C is obtained.