The hex color #ecfcbd is a light color. The web-safe version is Hex
#FFFFCC. A complementary color is
#130342. The grayscale version is
#E2E2E2. A 20% lighter version of the original color is
#FFFFF0, and Hex
#B9C98A is the 20% darker color. If the color is saturated by 10%, you get
#EDFFB9. If the color is desaturated by 10%, the color
#EBF9C1 is obtained.