Yellow-green (#CCFF00), also known as chartreuse, is a vibrant tertiary color that perfectly balances the energy of yellow with the freshness of green. With RGB values of 204, 255, 0, this electric hue embodies growth, renewal, and youthful enthusiasm.

This dynamic color evokes feelings of spring, new beginnings, and natural vitality. In design applications, yellow-green excels at creating focal points and drawing attention without overwhelming users. It's particularly effective for eco-friendly branding, wellness apps, and educational platforms where its energetic yet natural quality encourages engagement.

For balanced compositions, pair yellow-green with gray, white, or charcoal to maintain visual harmony. For more adventurous palettes, combine it with lime green and spring green for a fresh, nature-inspired scheme.

Yellow-green works exceptionally well as an accent color in user interfaces, particularly for call-to-action buttons, progress indicators, or highlighting positive actions. Its high visibility makes it ideal for guiding user attention while maintaining an approachable, optimistic feel.

When working with yellow-green, consider cultural context—while Western audiences often associate it with nature and positivity, perceptions may vary globally. This versatile color shines in applications focused on health, creativity, environmental consciousness, and innovation.