#3D7188Calypso (#3D7188) is a mid-tone, muted sky blue with an OKLCH hue of 229°, lightness 0.52 and chroma 0.066. 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 | #3D7188 |
|---|---|
| RGB | rgb(61, 113, 136) |
| HSL | hsl(198, 38%, 39%) |
| HSV | hsv(198, 55%, 53%) |
| CMYK | cmyk(55%, 17%, 0%, 47%) |
| CIE Lab | lab(45.1 -10.4 -17.9) |
| OKLCH | oklch(0.522 0.066 229) |
Under warm 2700K interior light Calypso shifts subtly: leans toward blue-green; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 1.6), so it is a lighting-stable choice.
#476f7f — ΔE 1.6, shifts subtly: leans toward blue-green#437285 — ΔE 0.9, shifts subtly: leans toward blue-green#3d7188 — ΔE 0.0, is virtually unchanged#3c728a — ΔE 0.4, is virtually unchangedTest Calypso 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 5.36:1 and against black 3.92:1, so white 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.
#9ec5d8 · #729fb4 · #3d7188 · #25566b · #033446 · #001520
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.
#619899 · #488692 · #3d7188 · #355d7d · #34486b · #313557
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.
#9ca0d4 · #82859e · #3d7188 · #225469 · #05394c · #18182e
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.
#b6d4e2 · #cb967a · #3d7188 · #3f4e55 · #16323f · #07161e
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f8f0ec · #7b868b · #3d7188 · #544f4c · #182228 · #030100
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.
#e2f5ff · #b7ceda · #3d7188 · #032d3c · #000911 · #f0813e
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#ffeee5 · #a27964 · #3d7188 · #714329 · #381501 · #00040a
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#ffeee5 · #a57576 · #3d7188 · #664b19 · #3a1114 · #100600
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#feecf4 · #a0758a · #3d7188 · #54531d · #232200 · #040001
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#f9edfc · #94799b · #3d7188 · #714329 · #0f2707 · #0f0200
#59869B · #759CAF · #92B2C2 · #AEC9D6 · #CBE0EB
#2E5E72 · #204B5D · #123949 · #052836 · #001824
#497082 · #536E7B · #5C6D75
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.