The hex color #ffef1e is a light color. The web-safe version is Hex
#FFFF33. A complementary color is
#0010E1. The grayscale version is
#AFAFAF. A 20% lighter version of the original color is
#FFFF51, and Hex
#CCBC00 is the 20% darker color. If the color is saturated by 10%, you get
#FFF510. If the color is desaturated by 10%, the color
#F7E92C is obtained.