The hex color #effd98 is a light color. The web-safe version is Hex
#FFFF99. A complementary color is
#100267. The grayscale version is
#D7D7D7. A 20% lighter version of the original color is
#FFFFCB, and Hex
#BCCA65 is the 20% darker color. If the color is saturated by 10%, you get
#F1FF92. If the color is desaturated by 10%, the color
#EDF99E is obtained.