The hex color #e9c00c is a light color. The web-safe version is Hex
#FFCC00. A complementary color is
#163FF3. The grayscale version is
#929292. A 20% lighter version of the original color is
#FFF33F, and Hex
#B68D00 is the 20% darker color. If the color is saturated by 10%, you get
#F2C500. If the color is desaturated by 10%, the color
#E0BB19 is obtained.