The hex color #f4e11a is a light color. The web-safe version is Hex
#FFCC33. A complementary color is
#0B1EE5. The grayscale version is
#A5A5A5. A 20% lighter version of the original color is
#FFFF4D, and Hex
#C1AE00 is the 20% darker color. If the color is saturated by 10%, you get
#FCE70C. If the color is desaturated by 10%, the color
#ECDB28 is obtained.