The hex color #da400c is a dark color. The web-safe version is Hex
#CC3300. A complementary color is
#25BFF3. The grayscale version is
#626262. A 20% lighter version of the original color is
#FF733F, and Hex
#A70D00 is the 20% darker color. If the color is saturated by 10%, you get
#E63D03. If the color is desaturated by 10%, the color
#CE4315 is obtained.