The hex color #f3010c is a dark color. The web-safe version is Hex
#FF0000. A complementary color is
#0CFEF3. The grayscale version is
#555555. A 20% lighter version of the original color is
#FF343F, and Hex
#C00000 is the 20% darker color. If the color is saturated by 10%, you get
#FF0005. If the color is desaturated by 10%, the color
#E30913 is obtained.