The hex color #ddfa31 is a light color. The web-safe version is Hex
#CCFF33. A complementary color is
#2205CE. The grayscale version is
#ADADAD. A 20% lighter version of the original color is
#FFFF64, and Hex
#AAC700 is the 20% darker color. If the color is saturated by 10%, you get
#E2FF25. If the color is desaturated by 10%, the color
#D8F23D is obtained.