The main difference between Yellow Green and Sage Green is brightness and saturation: both are yellow-green shades, but Sage Green is lighter and Yellow Green is more saturated. Yellow Green (#9ACD32) has an HSL of 80°, 61%, 50%, whereas Sage Green (#9CAF88) sits at 89°, 20%, 61%.
Four real design scenarios, with the recommended pick based on hue, saturation, and WCAG contrast.
Yellow Green is more saturated (61% HSL vs 20%) so it reads as bolder and more memorable at logo scale, while Sage Green can feel washed out when printed small.
Sage Green hits a 2.36:1 WCAG contrast against white — safer for text-heavy interfaces — where Yellow Green only reaches 1.88:1 and risks failing AA at small body sizes.
Sage Green is a cool-leaning tone that flatters spring/summer collections and warmer skin undertones, while Yellow Green leans cooler and is better suited to autumn/winter layering.
Sage Green is the more muted of the two (20% saturation) and sits more calmly on large wall surfaces, while Yellow 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.
Sage Green (#9CAF88) is a light, muted yellow-green with a cool-leaning undertone — it feels airy, soft, approachable and subdued, sophisticated.
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.