#89D178Fluorescence (#89D178) is a light, saturated green with an OKLCH hue of 140°, lightness 0.79 and chroma 0.141. It sits on the transitional side of the color wheel. In practice it behaves as an accent color: strong in focal moments, dominant over large fields.
| HEX | #89D178 |
|---|---|
| RGB | rgb(137, 209, 120) |
| HSL | hsl(109, 49%, 65%) |
| HSV | hsv(109, 43%, 82%) |
| CMYK | cmyk(34%, 0%, 43%, 18%) |
| CIE Lab | lab(77.4 -39.3 37.1) |
| OKLCH | oklch(0.792 0.141 140) |
Under warm 2700K interior light Fluorescence shifts subtly: leans toward yellow; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 1.7), so it is a lighting-stable choice.
#96cc6e — ΔE 1.7, shifts subtly: leans toward yellow#91d274 — ΔE 1.0, shifts subtly: leans toward yellow#89d178 — ΔE 0.0, is virtually unchanged#88d27a — ΔE 0.3, is virtually unchangedTest Fluorescence 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 1.83:1 and against black 11.46:1, 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 · #89d178 · #73b663 · #528e43 · #326825 · #134404
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.
#90fad9 · #86e7ab · #89d178 · #98b653 · #9e9b38 · #9c8127
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.
#89d178 · #65aaa7 · #558f47 · #00706d · #1e530f · #003432
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.
#d1e6cc · #89d178 · #b36fc3 · #416339 · #26441f · #12250e
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f8eefa · #89d178 · #96a493 · #645d65 · #1f2c1c · #020003
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 · #291d2c · #07010a · #89d178
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#dedab5 · #89d178 · #80b191 · #a65bd3 · #2a3b66 · #0b0931
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#e8c9e5 · #89d178 · #db81bf · #807e9f · #2e3857 · #04110b
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#eaf2ff · #89d178 · #75a0e5 · #a0363e · #51000e · #000012
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#e2f5ff · #89d178 · #46acd7 · #814091 · #431900 · #050009
#99D88A · #A9E09C · #B9E7AE · #C9EEC0 · #D8F5D1
#6BAC5C · #4F8841 · #346627 · #1A460D · #042800
#95CD88 · #A0C897 · #ABC4A5
Its chroma is high enough to carry accents, calls to action, and focal moments; large fields of it will dominate a composition. In palettes it pairs most predictably with its tonal ramp and analogous neighbors; reserve the complementary hue for small, deliberate contrast.