#3C9992Sea (#3C9992) is a mid-tone, soft blue-green with an OKLCH hue of 188°, lightness 0.63 and chroma 0.088. 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 | #3C9992 |
|---|---|
| RGB | rgb(60, 153, 146) |
| HSL | hsl(175, 44%, 42%) |
| HSV | hsv(175, 61%, 60%) |
| CMYK | cmyk(61%, 0%, 5%, 40%) |
| CIE Lab | lab(57.9 -28.9 -4.5) |
| OKLCH | oklch(0.626 0.088 188) |
Under warm 2700K interior light Sea shifts subtly: leans toward green; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 1.7), so it is a lighting-stable choice.
#4d9688 — ΔE 1.7, shifts subtly: leans toward green#469a8f — ΔE 0.9, shifts subtly: leans toward green#3c9992 — ΔE 0.0, is virtually unchanged#3a9a94 — ΔE 0.3, is virtually unchangedTest Sea 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 3.41:1 and against black 6.16:1, 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.
#aeefe8 · #7dc8c1 · #3c9992 · #217c76 · #005752 · #00322f
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.
#7bb7cb · #5aa8b1 · #3c9992 · #3c8671 · #3e7253 · #3f5e39
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.
#8eabc0 · #3c9992 · #2c7873 · #14547a · #003e3a · #021e30
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.
#daf8f4 · #a9d7d2 · #98afad · #3c9992 · #92515e · #2b514e
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#faeff0 · #98a7a5 · #3c9992 · #736b6c · #21312f · #030101
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.
#fbeef0 · #d4c5c7 · #a9989a · #311e21 · #0d0103 · #3c9992
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#ffecef · #cb919b · #3c9992 · #995763 · #4b1b26 · #000202
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#ffecef · #c193b3 · #3c9992 · #995b47 · #441c3a · #110100
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#f6eeff · #b098c6 · #3c9992 · #8f6330 · #432600 · #020006
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#eef1ff · #99a0cf · #3c9992 · #995763 · #362d00 · #070001
#5CA9A2 · #79B9B3 · #94C9C4 · #AEDAD5 · #C9EAE6
#287F79 · #136560 · #004D49 · #003532 · #001E1C
#539690 · #64928E · #738F8C
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.