The hex color #ff4135 is a dark color. The web-safe version is Hex
#FF3333. A complementary color is
#00BECA. The grayscale version is
#7C7C7C. A 20% lighter version of the original color is
#FF7468, and Hex
#CC0E02 is the 20% darker color. If the color is saturated by 10%, you get
#FF3B2E. If the color is desaturated by 10%, the color
#F2473C is obtained.