The hex color #e3f28c is a light color. The web-safe version is Hex
#CCFF99. A complementary color is
#1C0D73. The grayscale version is
#CBCBCB. A 20% lighter version of the original color is
#FFFFBF, and Hex
#B0BF59 is the 20% darker color. If the color is saturated by 10%, you get
#E5F686. If the color is desaturated by 10%, the color
#E1EE92 is obtained.