#00FF11So Sour (#00FF11) is a very light, vivid green with an OKLCH hue of 143°, lightness 0.87 and chroma 0.293. 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 | #00FF11 |
|---|---|
| RGB | rgb(0, 255, 17) |
| HSL | hsl(124, 100%, 50%) |
| HSV | hsv(124, 100%, 100%) |
| CMYK | cmyk(100%, 0%, 93%, 0%) |
| CIE Lab | lab(87.8 -85.9 81.8) |
| OKLCH | oklch(0.867 0.293 143) |
Under warm 2700K interior light So Sour 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.
#50f900 — ΔE 2.2, shifts subtly: leans toward yellow, loses intensity#38ff00 — ΔE 0.9, is virtually unchanged#00ff11 — ΔE 0.0, is virtually unchanged#00ff17 — ΔE 0.1, is virtually unchangedTest So Sour 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 1.37:1 and against black 15.31:1, 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.
#d6ffd3 · #00ff11 · #00c409 · #009804 · #006d02 · #004600
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.
#9cffc8 · #00ff11 · #9cd600 · #b3b500 · #b69800 · #b27d00
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.
#00ff11 · #00cdcc · #00b407 · #008888 · #006e02 · #004949
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.
#00ff11 · #e029f8 · #4e7b4b · #006101 · #003f00 · #001f00
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#00ff11 · #c3aec6 · #6b8969 · #554757 · #052705 · #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.
#f7eef8 · #cfc5d0 · #a397a4 · #2a1d2c · #080109 · #00ff11
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#00ff11 · #d2a4d7 · #bd39ce · #7b0089 · #37003e · #000200
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#ffe2fd · #00ff11 · #e5abd0 · #7e78cb · #303f61 · #05140f
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#00ff11 · #98b7ef · #3273ff · #93001b · #430006 · #000012
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#00ff11 · #7bc0e5 · #008bbc · #7b0089 · #361400 · #050008
#60FF5B · #86FF7F · #A2FF9B · #BAFFB4 · #CEFFCA
#00D00A · #00A305 · #007902 · #005100 · #002C00
#65F75F · #8CEF86 · #AAE5A5
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.