The hex color #e9e84d is a light color. The web-safe version is Hex
#FFFF66. A complementary color is
#1617B2. The grayscale version is
#B5B5B5. A 20% lighter version of the original color is
#FFFF80, and Hex
#B6B51A is the 20% darker color. If the color is saturated by 10%, you get
#EEED43. If the color is desaturated by 10%, the color
#E4E357 is obtained.