#91A8CFOld World (#91A8CF) is a light, muted blue with an OKLCH hue of 261°, lightness 0.73 and chroma 0.063. It sits on the cool side of the color wheel. In practice it behaves as a mid-weight working color for secondary surfaces and editorial blocks.
| HEX | #91A8CF |
|---|---|
| RGB | rgb(145, 168, 207) |
| HSL | hsl(218, 39%, 69%) |
| HSV | hsv(218, 30%, 81%) |
| CMYK | cmyk(30%, 19%, 0%, 19%) |
| CIE Lab | lab(68.4 1.1 -22.4) |
| OKLCH | oklch(0.728 0.063 261) |
Under warm 2700K interior light Old World shifts subtly: leans toward purple, loses intensity; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 2.1), so it is a lighting-stable choice.
#9aa4c2 — ΔE 2.1, shifts subtly: leans toward purple, loses intensity#98a9cb — ΔE 1.1, shifts subtly: leans toward purple#91a8cf — ΔE 0.0, is virtually unchanged#91a9d2 — ΔE 0.5, is virtually unchangedTest Old World 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 2.41:1 and against black 8.71:1, 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.
#ebf2ff · #b5caef · #91a8cf · #697d9f · #485a77 · #293851
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.
#a6d5ec · #96bfe2 · #91a8cf · #8991c0 · #847ca6 · #7b688b
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.
#91a8cf · #918299 · #566c90 · #5d426c · #233554 · #23162a
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.
#e5eeff · #c2cad9 · #91a8cf · #9d8150 · #59667b · #3f4756
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f5f1ea · #91a8cf · #868c95 · #56544f · #1d222b · #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.
#ebf2ff · #bfc9dc · #91a8cf · #14223a · #000216 · #f2ba4d
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#d9deb9 · #91a8cf · #9b6a33 · #4a5198 · #492d28 · #100725
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#faf1e1 · #91a8cf · #aa816b · #565822 · #391701 · #010100
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffedec · #91a8cf · #ad7d7c · #3c5e36 · #0e290a · #050000
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#ffecf4 · #91a8cf · #a97d90 · #694f1d · #002a1f · #110700
#A0B5D7 · #AFC1E0 · #BFCEE8 · #CFDBF1 · #DEE8F9
#7589AC · #5A6C8B · #40506A · #28354C · #121D2F
#96A8C7 · #9AA8BE · #9FA8B6
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.