The hex color #dde43a is a light color. The web-safe version is Hex
#CCCC33. A complementary color is
#221BC5. The grayscale version is
#A9A9A9. A 20% lighter version of the original color is
#FFFF6D, and Hex
#AAB107 is the 20% darker color. If the color is saturated by 10%, you get
#E2EA2F. If the color is desaturated by 10%, the color
#D8DE45 is obtained.