Shamrock green is a tone of green that represents the color of shamrocks, a symbol of Ireland. Another name for this color is shamrock.
The first recorded use of shamrock as a color name in English was in the 1820s (exact year uncertain)
This green is also defined as Irish green Pantone 347.
It is customary in Ireland, Australia, New Zealand, Canada and the United States to wear this tone of green, or any tone of green that one prefers, on St. Patrick’s Day, March 17, even if one is not of Irish descent.