#E7EFFBCotton Boll (#E7EFFB) is a near-white neutral with an OKLCH hue of 258°, lightness 0.95 and chroma 0.018. In practice it behaves as a background color — quiet over large surfaces.
| HEX | #E7EFFB |
|---|---|
| RGB | rgb(231, 239, 251) |
| HSL | hsl(216, 71%, 95%) |
| HSV | hsv(216, 8%, 98%) |
| CMYK | cmyk(8%, 5%, 0%, 2%) |
| CIE Lab | lab(94.2 -0.4 -6.7) |
| OKLCH | oklch(0.950 0.018 258) |
Under warm 2700K interior light Cotton Boll 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 ≈ 2.4), so it is a lighting-stable choice.
#f1e9eb — ΔE 2.4, shifts only faintly, with no single dominant change#eff0f6 — ΔE 1.3, shifts only faintly, with no single dominant change#e7effb — ΔE 0.0, is virtually unchanged#e7f0fe — ΔE 0.4, is virtually unchangedTest Cotton Boll 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 1.16:1 and against black 18.14:1, 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.
#e7effb · #c3cad5 · #9ca3ac · #777d86 · #555961 · #34383e
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.
#e7effb · #cfd9ff · #c6c0f1 · #beaad5 · #b495b8 · #a7829b
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.
#e7effb · #b5a8c0 · #7790b6 · #7f6592 · #405677 · #41344b
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.
#e7effb · #dfbf8d · #7e8794 · #58677e · #3b485c · #232c38
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#e7effb · #d5d0c9 · #8d939c · #5a5753 · #1f242d · #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.
#e7effb · #c6c9ce · #989ca2 · #1e2329 · #020308 · #f5b84e
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#e7effb · #d9cfc1 · #a68e68 · #6f5222 · #332000 · #000007
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#e7effb · #d9cfc1 · #b18872 · #5c5b25 · #3c1904 · #020200
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#e7effb · #dfcbcb · #b48484 · #426238 · #132b0a · #0a0001
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#e7effb · #ddcbd3 · #af8398 · #6f5222 · #002c1f · #100600
#E9F0FB · #EBF1FA · #EDF2FA · #EFF3F9 · #F1F4F9
#BBC2CD · #9198A1 · #6A6F77 · #444950 · #22262B
Its high lightness and low chroma make it a natural background or large-surface color. In palettes it pairs most predictably with its tonal ramp and analogous neighbors; reserve the complementary hue for small, deliberate contrast.