Maniac Green
#009000
High-contrast, pure green for assertive UI states
About Maniac Green
I think of Maniac Green as the green you spot on a control panel before you even read the labels. It's vivid but not noisy, with a direct, slightly cool undertone that keeps it from turning into the darker, self-contained depth of Clover. Next to Emerald it feels punchier and cleaner, less "sweet spot" and more action-state energy, while still avoiding Green Bell Pepper's brighter, more yellow, kitchen-lit tone.
This is the shade I'd use for the one you reach for when you need "go" without the cheer. It shows up well in security dashboards, network management UIs, and admin tools where status colors need to register instantly but stay under control. I also like it in industrial product pages and maintenance media, where green has to stay crisp against mid-tone neutrals and dark chrome.
Pair it with charcoal, cool grays, or off-white. Put it next to warm olives or honeyed creams and it can start to feel a bit sharper than your design expects.
Code snippets
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Contrast checker
WCAG 2.1 contrast ratios. AA requires 4.5:1 for normal text, 3:1 for large. AAA requires 7:1 / 4.5:1.
On White #ffffff
On Gray 100 #f5f5f5
On Gray 900 #18181b
On Black #000000
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