The hex color #e3f28d is a light color. The web-safe version is Hex
#CCFF99. A complementary color is
#1C0D72. The grayscale version is
#CBCBCB. A 20% lighter version of the original color is
#FFFFC0, and Hex
#B0BF5A is the 20% darker color. If the color is saturated by 10%, you get
#E5F687. If the color is desaturated by 10%, the color
#E1EE93 is obtained.