The hex color #f9c55b is a light color. The web-safe version is Hex
#FFCC66. A complementary color is
#063AA4. The grayscale version is
#B3B3B3. A 20% lighter version of the original color is
#FFF88E, and Hex
#C69228 is the 20% darker color. If the color is saturated by 10%, you get
#FFC752. If the color is desaturated by 10%, the color
#F2C364 is obtained.