#55FF11Poisonous (#55FF11) is a very light, vivid green with an OKLCH hue of 140°, lightness 0.88 and chroma 0.279. It sits on the transitional side of the color wheel. In practice it behaves as a mid-weight working color for secondary surfaces and editorial blocks.
| HEX | #55FF11 |
|---|---|
| RGB | rgb(85, 255, 17) |
| HSL | hsl(103, 100%, 53%) |
| HSV | hsv(103, 93%, 100%) |
| CMYK | cmyk(67%, 0%, 93%, 0%) |
| CIE Lab | lab(88.7 -77.7 82.9) |
| OKLCH | oklch(0.877 0.279 140) |
Under warm 2700K interior light Poisonous shifts subtly: leans toward yellow, loses intensity; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 2.2), so it is a lighting-stable choice.
#73f900 — ΔE 2.2, shifts subtly: leans toward yellow, loses intensity#66ff00 — ΔE 0.9, is virtually unchanged#55ff11 — ΔE 0.0, is virtually unchanged#52ff17 — ΔE 0.2, is virtually unchangedTest Poisonous in the color lighting simulator — sweep it through daylight, warm 2700K light, 4000K LED, and shade alongside the rest of your palette.
Against white it measures 1.34:1 and against black 15.7:1, so black text is the stronger pairing. That pairing passes WCAG AA for body text. Avoid white text on this color entirely.
One color explored: close hues with real lightness and chroma structure, so the palette is the anchor through value rather than a set of colors.
#d8ffcf · #55ff11 · #3cc200 · #2c9500 · #1d6c00 · #0e4500
The anchor's neighbours on the wheel — everything shares an undertone, so the chord carries color without anything having to be muted to get along.
#99ffc1 · #55ff11 · #a8d700 · #bbb700 · #bd9900 · #b97e00
The mid-gap pairing — sage and mustard, terracotta and olive. A foil rotated 40–65° toward warm or cool: too far to be kin, too near to argue, carried by temperature and a deliberate value offset.
#55ff11 · #00d1cc · #37b500 · #008c88 · #1e7000 · #004c4a
One deliberately opposed voice — a single restrained counterpoint across the wheel, or temperature against temperature where the anchor is too muted to carry a loud opposite.
#55ff11 · #97c18e · #d332f4 · #196300 · #0d4100 · #022100
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#55ff11 · #c5b2ca · #708a6b · #564959 · #0b2705 · #030005
This color as a ground rather than a subject — its own restraint held across a narrow value band, carrying one saturated voice from the opposite temperature.
#f7eff9 · #cec5d1 · #a298a5 · #2a1d2c · #07010a · #55ff11
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#55ff11 · #d2a9db · #b945d2 · #7b0091 · #360041 · #000200
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#ffeadf · #55ff11 · #c2bce5 · #d46498 · #473f5d · #141205
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#55ff11 · #9abbf0 · #2579ff · #950023 · #44000a · #000013
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#55ff11 · #7fc4e5 · #008ebc · #7b0091 · #381300 · #050009
#7AFF5A · #96FF7E · #ACFF9A · #C0FFB2 · #D2FFC8
#41D000 · #31A300 · #217900 · #135100 · #052C00
#7EF861 · #9BF088 · #B3E7A8
Its moderate chroma lets it work in mid-size areas — upholstery, secondary UI surfaces, editorial blocks — without overwhelming neighbors. In palettes it pairs most predictably with its tonal ramp and analogous neighbors; reserve the complementary hue for small, deliberate contrast.