The hex color #fef39f is a light color. The web-safe version is Hex
#FFFF99. A complementary color is
#010C60. The grayscale version is
#DBDBDB. A 20% lighter version of the original color is
#FFFFD2, and Hex
#CBC06C is the 20% darker color. If the color is saturated by 10%, you get
#FFF599. If the color is desaturated by 10%, the color
#FAF1A5 is obtained.