The hex color #ECE499 is a light color. The web-safe version is Hex
#FFCC99. A complementary color is
#131B66. The grayscale version is
#CECECE. A 20% lighter version of the original color is
#FFFFCC, and Hex
#B9B166 is the 20% darker color. If the color is saturated by 10%, you get
#EFE694. If the color is desaturated by 10%, the color
#E9E29E is obtained.