The hex color #30603c is a dark color. The web-safe version is Hex
#336633. A complementary color is
#CF9FC3. The grayscale version is
#444444. A 20% lighter version of the original color is
#63936F, and Hex
#002D09 is the 20% darker color. If the color is saturated by 10%, you get
#2E633B. If the color is desaturated by 10%, the color
#325D3D is obtained.