#43535ENightfall (#43535E) is a grey neutral with an OKLCH hue of 238°, lightness 0.43 and chroma 0.027. In practice it behaves as a mid-weight working color for secondary surfaces and editorial blocks.
| HEX | #43535E |
|---|---|
| RGB | rgb(67, 83, 94) |
| HSL | hsl(204, 17%, 32%) |
| HSV | hsv(204, 29%, 37%) |
| CMYK | cmyk(29%, 12%, 0%, 63%) |
| CIE Lab | lab(34.4 -3.3 -8.4) |
| OKLCH | oklch(0.433 0.027 238) |
Under warm 2700K interior light Nightfall shifts only faintly, with no single dominant change; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 1.1), so it is a lighting-stable choice.
#485158 — ΔE 1.1, shifts only faintly, with no single dominant change#47535c — ΔE 0.6, is virtually unchanged#43535e — ΔE 0.0, is virtually unchanged#43535f — ΔE 0.2, is virtually unchangedTest Nightfall 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 7.96:1 and against black 2.64:1, so white text is the stronger pairing. That pairing passes WCAG AA for body text. Avoid black 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.
#97a5ae · #717f89 · #43535e · #2c3a44 · #0f1c24 · #000307
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.
#467c83 · #306a7d · #43535e · #254264 · #252f51 · #201d3d
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.
#a8a5c1 · #8982b5 · #6c6981 · #43535e · #0e3a53 · #002034
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.
#d3a37f · #64727b · #43535e · #1e3746 · #061b28 · #00040a
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f7f0eb · #a3adb4 · #6e6965 · #43535e · #303a41 · #020100
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.
#ecf3f8 · #c2cbd0 · #43535e · #1a262e · #00050b · #f29444
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#feefe3 · #c9a386 · #8a5f3c · #43535e · #513013 · #00050f
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#feefe3 · #cf9d96 · #7c6733 · #43535e · #552b25 · #0d0600
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffecf2 · #cc9cab · #66703c · #43535e · #363d13 · #040001
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#fbedfa · #c19ebf · #8a5f3c · #43535e · #1f4225 · #120400
#5D6C76 · #79868F · #95A1A9 · #B3BCC3 · #D1D9DE
#37454F · #2B3841 · #202B33 · #151F25 · #0B1318
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.