Slime Green — Slime Green has the zesty, sharp brightness of a fresh lime, giving it its name. It belongs to the Green family: a medium-toned, vivid tone with hex code #99CC04 and RGB values of 153, 204, 4. Its dominant channel values give it a warm undertone that reads as vivid rather than flat. Slime Green pairs well with deep charcoal or black for contrast and works nicely in packaging design. Nearest neighbors: sage.