#8FFE09Acid Green (#8FFE09) is a very light, vivid green with an OKLCH hue of 134°, lightness 0.89 and chroma 0.256. 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 | #8FFE09 |
|---|---|
| RGB | rgb(143, 254, 9) |
| HSL | hsl(87, 99%, 52%) |
| HSV | hsv(87, 96%, 100%) |
| CMYK | cmyk(44%, 0%, 96%, 0%) |
| CIE Lab | lab(90.2 -62.9 85.6) |
| OKLCH | oklch(0.895 0.256 134) |
Under warm 2700K interior light Acid Green shifts subtly: drifts toward yellow-green; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 2.1), so it is a lighting-stable choice.
#a1f800 — ΔE 2.1, shifts subtly: drifts toward yellow-green#9aff00 — ΔE 1.1, shifts subtly: leans toward yellow#8ffe09 — ΔE 0.0, is virtually unchanged#8eff11 — ΔE 0.3, is virtually unchangedTest Acid Green 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 1.28:1 and against black 16.35:1, 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.
#dbffc5 · #8ffe09 · #67bc00 · #4e9100 · #376800 · #204200
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.
#8ffe09 · #bfd800 · #cbb800 · #cb9b00 · #c77e00 · #c06100
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.
#8ffe09 · #38d6c8 · #64b500 · #009288 · #3c7200 · #00524c
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.
#8ffe09 · #a5c492 · #b93cec · #356500 · #214400 · #0e2500
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#8ffe09 · #c8b9d0 · #798d6e · #564c5b · #142705 · #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.
#f6eff9 · #cdc5d2 · #a198a6 · #281d2e · #07010b · #8ffe09
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#8ffe09 · #d1b1e2 · #b155d9 · #7900a0 · #350049 · #000200
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#feedff · #8ffe09 · #e8b6d4 · #7671c8 · #364265 · #03110b
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#8ffe09 · #9dc2f0 · #0084f8 · #980032 · #450011 · #00051a
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#8ffe09 · #87cae4 · #0094b9 · #7900a0 · #3c1100 · #04000a
#9EFF4F · #AFFF76 · #BEFF93 · #CCFFAC · #D8FFC1
#73CF00 · #59A200 · #407800 · #285000 · #122B00
#A2F862 · #B3F28B · #C3EAAC
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.