The hex color #e99d16 is a light color. The web-safe version is Hex
#FF9900. A complementary color is
#1662E9. The grayscale version is
#898989. A 20% lighter version of the original color is
#FFD049, and Hex
#B66A00 is the 20% darker color. If the color is saturated by 10%, you get
#F39F0A. If the color is desaturated by 10%, the color
#DF9B22 is obtained.