The main difference between Yellow Green and Chartreuse Green is hue — Yellow Green is a cool-leaning yellow-green, while Chartreuse Green is a cool-leaning green. Yellow Green (#9ACD32) has an HSL of 80°, 61%, 50%, whereas Chartreuse Green (#7FFF00) sits at 90°, 100%, 50%.
Four real design scenarios, with the recommended pick based on hue, saturation, and WCAG contrast.
Chartreuse Green is more saturated (100% HSL vs 61%) so it reads as bolder and more memorable at logo scale, while Yellow Green can feel washed out when printed small.
Yellow Green hits a 1.88:1 WCAG contrast against white — safer for text-heavy interfaces — where Chartreuse Green only reaches 1.30:1 and risks failing AA at small body sizes.
Yellow Green is a cool-leaning tone that flatters spring/summer collections and warmer skin undertones, while Chartreuse Green leans cooler and is better suited to autumn/winter layering.
Yellow Green is the more muted of the two (61% saturation) and sits more calmly on large wall surfaces, while Chartreuse Green's higher chroma can overwhelm a room when used beyond accent pieces.
Yellow Green (#9ACD32) is a medium, moderately saturated yellow-green with a cool-leaning undertone — it feels balanced, versatile and balanced in intensity.
Chartreuse Green (#7FFF00) is a medium, vivid green with a cool-leaning undertone — it feels balanced, versatile and bright, energetic, eye-catching.
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.