The hex color #f99c0b is a light color. The web-safe version is Hex
#FF9900. A complementary color is
#0663F4. The grayscale version is
#8B8B8B. A 20% lighter version of the original color is
#FFCF3E, and Hex
#C66900 is the 20% darker color. If the color is saturated by 10%, you get
#FF9E00. If the color is desaturated by 10%, the color
#EE9A18 is obtained.