This hue is inspired by the unmistakable green of the Grinch, Dr. Seuss’s famously grumpy holiday character. His sour, chartreuse-leaning green reflects both his prickly personality and his eventual transformation, becoming a visual shorthand for mischief, irony, and Christmas rebellion. Over decades of books, cartoons, and films, this peculiar green has become inseparable from the character—a color that starts mean-spirited and ends warm, proving even the grumpiest shades can grow a heart.