#3992A8Blue Moon (#3992A8) is a mid-tone, soft sky blue with an OKLCH hue of 217°, lightness 0.62 and chroma 0.089. 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 | #3992A8 |
|---|---|
| RGB | rgb(57, 146, 168) |
| HSL | hsl(192, 49%, 44%) |
| HSV | hsv(192, 66%, 66%) |
| CMYK | cmyk(66%, 13%, 0%, 34%) |
| CIE Lab | lab(56.3 -19.3 -19.4) |
| OKLCH | oklch(0.616 0.089 217) |
Under warm 2700K interior light Blue Moon shifts subtly: leans toward blue-green, loses intensity; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 1.9), so it is a lighting-stable choice.
#4a8f9d — ΔE 1.9, shifts subtly: leans toward blue-green, loses intensity#4393a5 — ΔE 0.9, shifts subtly: leans toward blue-green#3992a8 — ΔE 0.0, is virtually unchanged#3793aa — ΔE 0.4, is virtually unchangedTest Blue Moon 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 3.59:1 and against black 5.85:1, so black text is the stronger pairing. That pairing passes WCAG AA for body text.
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.
#aae8fa · #7ac1d5 · #3992a8 · #1e768a · #005161 · #002e38
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.
#75b8af · #55a6ab · #3992a8 · #3b7b9c · #3e658c · #3f5078
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.
#abc1fe · #98a3c0 · #3992a8 · #297284 · #085565 · #28314b
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.
#d7f3fb · #a6d2de · #94abb2 · #3992a8 · #90513f · #284d56
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#faefec · #94a3a8 · #3992a8 · #706967 · #202f33 · #040101
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.
#fbefeb · #d4c6c2 · #a99994 · #32201a · #0f0200 · #3992a8
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#dcd8b2 · #769fc1 · #3992a8 · #a61d14 · #4d3141 · #03101e
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#d4d8b3 · #d8779a · #3992a8 · #6c5544 · #4f373c · #04110f
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#feebf8 · #be8fb1 · #3992a8 · #796b26 · #352c00 · #040003
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#f6eeff · #ac95c4 · #3992a8 · #975745 · #223200 · #060000
#59A3B6 · #76B4C5 · #92C5D4 · #ADD7E2 · #C8E8F1
#26798C · #116072 · #004958 · #00323D · #001D24
#5090A1 · #618D99 · #708A92
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.