The hex color #ece42b is a light color. The web-safe version is Hex
#FFCC33. A complementary color is
#131BD4. The grayscale version is
#A9A9A9. A 20% lighter version of the original color is
#FFFF5E, and Hex
#B9B100 is the 20% darker color. If the color is saturated by 10%, you get
#F3EA1E. If the color is desaturated by 10%, the color
#E5DE38 is obtained.