The hex color #fff38d is a light color. The web-safe version is Hex
#FFFF99. A complementary color is
#000C72. The grayscale version is
#D5D5D5. A 20% lighter version of the original color is
#FFFFC0, and Hex
#CCC05A is the 20% darker color. If the color is saturated by 10%, you get
#FFF686. If the color is desaturated by 10%, the color
#FBF094 is obtained.