Kelly Green #4CBB17

Kelly green is the green most people picture for St. Patrick's Day. The name nods to Kelly, one of Ireland's most common surnames, and the color is everywhere on March 17, in Ireland and abroad. Shamrocks, the plant tied to St. Patrick, are usually drawn in this same bright green on decorations.

Outside that holiday, it's a cheerful, sporty color. It shows up on team uniforms, school colors, and preppy clothing, where it suggests energy, luck, and confidence. Golf, tennis, and lawn sports also use bright grassy greens like this one, so in clothing it can carry a clubby, country-club note.

Kelly green is bright enough to feel optimistic and saturated enough to feel bold. People read it as friendly and casual, a color for game days and garden parties.

Kelly green is a good fit for sports, education, outdoor events, and brands that want to feel upbeat. It's bright, so it grabs attention in social posts and on signage. Dark text reads better on it than white; black or deep navy works for buttons and labels. It pairs naturally with white and navy for a clean, sporty look, and with gold for a traditional Irish palette. In fashion it's a bold color for sweaters, dresses, and accessories, and it's easiest to wear with neutrals.