The main difference between Green and Emerald is brightness and saturation: both are green shades, but Emerald is lighter and Green is more saturated. Green (#008000) and Emerald (#50C878) are similar colors often confused. They differ in brightness, saturation, and undertone, making each better suited for different design contexts.
Four real design scenarios, with the recommended pick based on hue, saturation, and WCAG contrast.
Green is more saturated (100% HSL vs 52%) so it reads as bolder and more memorable at logo scale, while Emerald can feel washed out when printed small.
Green hits a 5.14:1 WCAG contrast against white — safer for text-heavy interfaces — where Emerald only reaches 2.13:1 and risks failing AA at small body sizes.
Emerald is a cool-leaning tone that flatters spring/summer collections and warmer skin undertones, while Green leans cooler and is better suited to autumn/winter layering.
Emerald is the more muted of the two (52% saturation) and sits more calmly on large wall surfaces, while Green's higher chroma can overwhelm a room when used beyond accent pieces.
Green (#008000) is a dark, vivid green with a cool-leaning undertone — it feels rich, serious, substantial and bright, energetic, eye-catching.
Emerald (#50C878) is a medium, moderately saturated green with a cool-leaning undertone — it feels balanced, versatile and balanced in intensity.
Text legibility depends on the contrast ratio between foreground and background. WCAG 2.1 AA requires at least 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Use these numbers to choose accessible combinations for your design.
Each color has a dedicated page with shades, tints, CSS name, pairings, and color psychology.