The hex color #cde55d is a light color. The web-safe version is Hex
#CCCC66. A complementary color is
#321AA2. The grayscale version is
#B0B0B0. A 20% lighter version of the original color is
#FFFF90, and Hex
#9AB22A is the 20% darker color. If the color is saturated by 10%, you get
#D0EA55. If the color is desaturated by 10%, the color
#CAE065 is obtained.