#F5F1E5Open Book (#F5F1E5) is a near-white neutral with an OKLCH hue of 92°, lightness 0.96 and chroma 0.016. In practice it behaves as a background color — quiet over large surfaces.
| HEX | #F5F1E5 |
|---|---|
| RGB | rgb(245, 241, 229) |
| HSL | hsl(45, 44%, 93%) |
| HSV | hsv(45, 7%, 96%) |
| CMYK | cmyk(0%, 2%, 7%, 4%) |
| CIE Lab | lab(95.2 -0.7 6.3) |
| OKLCH | oklch(0.958 0.016 92) |
Under warm 2700K interior light Open Book shifts subtly: takes on a orange cast, gains 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.
#feebd6 — ΔE 2.2, shifts subtly: takes on a orange cast, gains intensity#fdf2e0 — ΔE 1.3, shifts subtly: takes on a yellow cast#f5f1e5 — ΔE 0.0, is virtually unchanged#f5f2e8 — ΔE 0.4, is virtually unchangedTest Open Book 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 1.13:1 and against black 18.6:1, 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.
#f5f1e5 · #cdc9be · #a5a298 · #7f7d74 · #5b5952 · #3a3832
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.
#f5f1e5 · #f9d7a9 · #ecc09e · #dbaa96 · #c8968f · #b28388
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.
#f5f1e5 · #a3b7a2 · #a09164 · #597f57 · #64562e · #30422f
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.
#f5f1e5 · #d2cdbd · #b4aa8d · #91886f · #4b5885 · #322d1e
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f5f1e5 · #d1d3db · #97948a · #57595e · #28241b · #010102
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.
#f5f1e5 · #cbc9c4 · #9f9d97 · #27251e · #070502 · #e5c14d
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#f5f1e5 · #ced3e3 · #8692ba · #4a5683 · #1a2143 · #080400
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#f5f1e5 · #ced3e3 · #7399b6 · #614f7c · #002740 · #020006
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#f5f1e5 · #c4d8dc · #679ea9 · #72496c · #361732 · #000305
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#f5f1e5 · #c4d9d4 · #6aa096 · #4a5683 · #3c1522 · #000007
#F5F2E7 · #F5F2E9 · #F6F3EB · #F6F4ED · #F6F4F0
#C8C4B9 · #9C998F · #727068 · #4B4942 · #282620
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.