The hex color #dddf2f is a light color. The web-safe version is Hex
#CCCC33. A complementary color is
#2220D0. The grayscale version is
#A4A4A4. A 20% lighter version of the original color is
#FFFF62, and Hex
#AAAC00 is the 20% darker color. If the color is saturated by 10%, you get
#E3E523. If the color is desaturated by 10%, the color
#D7D93B is obtained.