#11DD00 Hex Color

Caustic Green #11dd00 pairs well with near-black, deep navy, and soft white, which give its intense yellow-leaning green enough contrast to feel intentional; muted purple can add a complementary, high-energy accent without competing across every element.

For accessibility, use black or very dark text on #11dd00; its high brightness creates strong contrast with black, while white text has weak contrast and should not carry essential content without testing.