The hex color #ddf353 is a light color. The web-safe version is Hex
#CCFF66. A complementary color is
#220CAC. The grayscale version is
#B6B6B6. A 20% lighter version of the original color is
#FFFF86, and Hex
#AAC020 is the 20% darker color. If the color is saturated by 10%, you get
#E1F949. If the color is desaturated by 10%, the color
#D9ED5D is obtained.