#B9C4D2Plein Air (#B9C4D2) is a grey neutral with an OKLCH hue of 254°, lightness 0.82 and chroma 0.023. In practice it behaves as a mid-weight working color for secondary surfaces and editorial blocks.
| HEX | #B9C4D2 |
|---|---|
| RGB | rgb(185, 196, 210) |
| HSL | hsl(214, 22%, 77%) |
| HSV | hsv(214, 12%, 82%) |
| CMYK | cmyk(12%, 7%, 0%, 18%) |
| CIE Lab | lab(78.7 -1 -8.3) |
| OKLCH | oklch(0.816 0.023 254) |
Under warm 2700K interior light Plein Air shifts subtly: 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.
#c2bfc4 — ΔE 2.2, shifts subtly: loses intensity#c0c5ce — ΔE 1.1, shifts only faintly, with no single dominant change#b9c4d2 — ΔE 0.0, is virtually unchanged#b9c5d5 — ΔE 0.4, is virtually unchangedTest Plein Air 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 1.77:1 and against black 11.89:1, 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.
#e9f3ff · #b9c4d2 · #99a3b0 · #757e89 · #525a64 · #323941
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.
#b3e6f9 · #a8d7f7 · #b9c4d2 · #9faedd · #9a98c4 · #9283a9
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.
#b9c4d2 · #a99eb6 · #6b87ab · #735c8a · #354e6c · #372c43
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.
#dde8f6 · #b9c4d2 · #bc9a6b · #6f8198 · #516175 · #38424f
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#b9c4d2 · #aaa69f · #6e757d · #484541 · #161d25 · #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.
#eef2f8 · #b9c4d2 · #989ea5 · #1f262e · #02050c · #f4b14b
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#b9c4d2 · #afa597 · #8a6f4c · #5d3f0e · #2a1800 · #000108
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#b9c4d2 · #afa597 · #936957 · #4c480e · #331001 · #040300
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#b9c4d2 · #b4a1a2 · #946669 · #344f23 · #0e2201 · #090001
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#b9c4d2 · #b1a1aa · #8e667d · #5d3f0e · #002316 · #130700
#C2CCD9 · #CCD4DF · #D5DCE6 · #DFE5EC · #E8EDF3
#96A0AC · #757D88 · #555C66 · #373D45 · #1C2127
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.