The hex color #dce20c is a light color. The web-safe version is Hex
#CCCC00. A complementary color is
#231DF3. The grayscale version is
#999999. A 20% lighter version of the original color is
#FFFF3F, and Hex
#A9AF00 is the 20% darker color. If the color is saturated by 10%, you get
#E3E900. If the color is desaturated by 10%, the color
#D5DB1A is obtained.