#99BDD2Gentle Sky (#99BDD2) is a light, muted sky blue with an OKLCH hue of 234°, lightness 0.78 and chroma 0.049. 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 | #99BDD2 |
|---|---|
| RGB | rgb(153, 189, 210) |
| HSL | hsl(202, 39%, 71%) |
| HSV | hsv(202, 27%, 82%) |
| CMYK | cmyk(27%, 10%, 0%, 18%) |
| CIE Lab | lab(74.7 -7.3 -14.5) |
| OKLCH | oklch(0.779 0.049 234) |
Under warm 2700K interior light Gentle Sky shifts subtly: leans toward blue-green, loses intensity; in north-facing or shaded light it shifts subtly: leans toward blue. Overall drift across common illuminants is small (max ΔE ≈ 2), so it is a lighting-stable choice.
#a3b9c5 — ΔE 2.0, shifts subtly: leans toward blue-green, loses intensity#a0bece — ΔE 1.1, shifts subtly: leans toward blue-green#99bdd2 — ΔE 0.0, is virtually unchanged#99bed5 — ΔE 0.4, shifts subtly: leans toward blueTest Gentle Sky 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 1.99:1 and against black 10.56:1, 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.
#e4f5ff · #99bdd2 · #86a8bb · #638193 · #435d6c · #243b48
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.
#b0e9ed · #98d5e7 · #99bdd2 · #83a8cf · #7f92ba · #7a7ca3
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.
#99bdd2 · #9595af · #53819a · #5a5786 · #1d475d · #27263c
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.
#cddde7 · #99bdd2 · #ba8969 · #5c7989 · #405967 · #2a3a43
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f8f0eb · #99bdd2 · #929da3 · #615c59 · #1e282e · #040201
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.
#e6f4fc · #99bdd2 · #364c58 · #172f3c · #000d18 · #f18c42
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#ffeee4 · #99bdd2 · #b99178 · #7e5133 · #3e1c03 · #00060f
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#ffeee4 · #99bdd2 · #be8d89 · #725a27 · #401817 · #0e0600
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffecf3 · #99bdd2 · #ba8c9e · #5d622d · #262900 · #040001
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#faedfb · #99bdd2 · #ae8fb0 · #7e5133 · #102e10 · #110300
#A7C7D9 · #B5D0E0 · #C3DAE8 · #D0E3EF · #DFEDF6
#7B9BAD · #5D7A8A · #415A69 · #273D49 · #0F212B
#A0BCCC · #A6BBC7 · #ADB9C1
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.