Sage green is cooler, paler and greyer; olive green is deeper and leans distinctly yellow-brown.
Obvious difference: their hues sit about 25° apart, Olive Green is 17 L* points darker, Olive Green is noticeably more saturated. These read as clearly different colours in ordinary viewing conditions, not as two versions of the same shade.
Perceptual distance
ΔE 21.9
Obvious difference
Hue difference
25°
adjacent hue
Lightness
-17 L*
Olive Green is darker
Chroma
+36 C*
Olive Green is much more saturated
Where each sits on the two axes
Positions are plotted from each colour’s measured CIELAB values. The scale is perceptual, not a paint-mixing ratio.
Warmth: Sage Green reads neutral, Olive Green reads neutral. Both sit on the same side of the warm/cool divide, so they will generally coordinate rather than clash, even where they are clearly different in depth.
Both are muted greens named after plants, both are marketed as 'earthy', and paint ranges frequently name a single colour with either word depending on the collection it sits in.
Sage is one of the most-used contemporary interior colours — kitchen cabinetry, bedroom walls and bathroom joinery — because its greyness lets it behave almost like a neutral.
Choose it when: Choose sage when the room's other elements are cool or grey — grey flooring, white marble, chrome or brushed steel — where olive's yellow can look muddy.
Full sage green profileOlive appears in military and workwear clothing, in exterior joinery and garden structures, and in interiors aiming for a warmer, more traditional or more masculine reading.
Choose it when: Choose olive when the scheme is warm — oak, brass, terracotta, tan leather — where sage can look thin and slightly cold by comparison.
Full olive green profileTreating sage as a safe neutral in a north-facing room. Sage's greyness is what makes it flexible, but under cool north light that same greyness can drain it until it reads as an indeterminate grey with a green cast rather than as a green.
Both are strongly light-dependent because they are low in saturation. Sage in particular can swing between green, grey and a faint blue depending on the light source, and is a classic example of why a large sample matters.
A screen cannot predict how either colour will look on a real surface — see why colours differ between sample, wall and screen.
Placed directly against each other, Sage Green and Olive Green give a contrast ratio of 1.78:1 — not enough for one to be used as text on the other at any size.
Contrast is only one part of an accessible pairing — see the accessibility guidance.
Measured differences (perceptual distance, hue, lightness, chroma, undertone) are calculated from each colour's own catalogue values. The usage and decision guidance is Colourwise editorial judgement drawn from conventional decorating and design practice, not a manufacturer claim — see /methodology.