The hex color #e4e77a is a light color. The web-safe version is Hex
#CCFF66. A complementary color is
#1B1885. The grayscale version is
#C2C2C2. A 20% lighter version of the original color is
#FFFFAD, and Hex
#B1B447 is the 20% darker color. If the color is saturated by 10%, you get
#E7EB73. If the color is desaturated by 10%, the color
#E1E381 is obtained.