The hex color #e3731d is a light color. The web-safe version is Hex
#CC6633. A complementary color is
#1C8CE2. The grayscale version is
#7C7C7C. A 20% lighter version of the original color is
#FFA650, and Hex
#B04000 is the 20% darker color. If the color is saturated by 10%, you get
#ED7214. If the color is desaturated by 10%, the color
#D97426 is obtained.