The hex color #ffc11f is a light color. The web-safe version is Hex
#FFCC33. A complementary color is
#003EE0. The grayscale version is
#A0A0A0. A 20% lighter version of the original color is
#FFF452, and Hex
#CC8E00 is the 20% darker color. If the color is saturated by 10%, you get
#FFC412. If the color is desaturated by 10%, the color
#F5BE2C is obtained.