The main difference between Olive and Army Green is hue — Olive is a cool-leaning yellow, while Army Green is a cool-leaning yellow-green. Olive and Army Green are often confused but differ in brightness, saturation, and undertone. Olive (#808000) and Army Green (#4B5320) each have distinct characteristics and best uses.
Four real design scenarios, with the recommended pick based on hue, saturation, and WCAG contrast.
Olive is more saturated (100% HSL vs 44%) so it reads as bolder and more memorable at logo scale, while Army Green can feel washed out when printed small.
Army Green hits a 8.21:1 WCAG contrast against white — safer for text-heavy interfaces — where Olive only reaches 4.20:1 and risks failing AA at small body sizes.
Olive is a cool-leaning tone that flatters spring/summer collections and warmer skin undertones, while Army Green leans cooler and is better suited to autumn/winter layering.
Army Green is the more muted of the two (44% saturation) and sits more calmly on large wall surfaces, while Olive's higher chroma can overwhelm a room when used beyond accent pieces.
Olive (#808000) is a dark, vivid yellow with a cool-leaning undertone — it feels rich, serious, substantial and bright, energetic, eye-catching.
Army Green (#4B5320) is a dark, moderately saturated yellow-green with a cool-leaning undertone — it feels rich, serious, substantial 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.