#52B4CABlue Bobbin (#52B4CA) is a light, soft sky blue with an OKLCH hue of 215°, lightness 0.72 and chroma 0.096. 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 | #52B4CA |
|---|---|
| RGB | rgb(82, 180, 202) |
| HSL | hsl(191, 53%, 56%) |
| HSV | hsv(191, 59%, 79%) |
| CMYK | cmyk(59%, 11%, 0%, 21%) |
| CIE Lab | lab(68.5 -22.2 -19.8) |
| OKLCH | oklch(0.720 0.096 215) |
Under warm 2700K interior light Blue Bobbin 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 ≈ 2.1), so it is a lighting-stable choice.
#64b0bd — ΔE 2.1, shifts subtly: leans toward blue-green, loses intensity#5db5c6 — ΔE 1.1, shifts subtly: leans toward blue-green#52b4ca — ΔE 0.0, is virtually unchanged#50b5cd — ΔE 0.4, is virtually unchangedTest Blue Bobbin 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 2.4:1 and against black 8.74:1, 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.
#dbf8ff · #84d8ec · #52b4ca · #2d8a9d · #006476 · #00404b
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.
#92dbcf · #6fc8cc · #52b4ca · #539cbf · #5685af · #576f9b
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.
#b6c4e4 · #52b4ca · #4393a5 · #4f66a1 · #005766 · #26324e
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.
#c8f4ff · #b3cdd3 · #52b4ca · #b56d5b · #426b74 · #304a50
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#fbefec · #52b4ca · #7d8c90 · #58514f · #142529 · #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.
#fceeeb · #d6c6c2 · #ab9994 · #34201b · #110201 · #52b4ca
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#ffede9 · #52b4ca · #b3786a · #7f3c2c · #400d03 · #000407
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#ffede9 · #52b4ca · #b17583 · #764505 · #3f0a1c · #190800
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffebfa · #52b4ca · #a7789c · #635100 · #2a2100 · #040003
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#f5eeff · #52b4ca · #947daf · #7f3c2c · #1b2600 · #060000
#6DC0D3 · #86CBDC · #9ED7E5 · #B5E3EE · #CBEFF7
#3A94A8 · #217687 · #015868 · #003C47 · #002129
#6AB1C2 · #7CAEBA · #8DABB2
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.