#3E5361Dark Secret (#3E5361) is a dark, muted sky blue with an OKLCH hue of 238°, lightness 0.43 and chroma 0.035. 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 | #3E5361 |
|---|---|
| RGB | rgb(62, 83, 97) |
| HSL | hsl(204, 22%, 31%) |
| HSV | hsv(204, 36%, 38%) |
| CMYK | cmyk(36%, 14%, 0%, 62%) |
| CIE Lab | lab(34.1 -4.2 -10.7) |
| OKLCH | oklch(0.430 0.035 238) |
Under warm 2700K interior light Dark Secret shifts subtly: leans toward blue-green; in north-facing or shaded light it shifts subtly: leans toward blue. Overall drift across common illuminants is small (max ΔE ≈ 1.2), so it is a lighting-stable choice.
#43515a — ΔE 1.2, shifts subtly: leans toward blue-green#42535f — ΔE 0.6, is virtually unchanged#3e5361 — ΔE 0.0, is virtually unchanged#3e5362 — ΔE 0.2, shifts subtly: leans toward blueTest Dark Secret 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 8.03:1 and against black 2.61:1, so white text is the stronger pairing. That pairing passes WCAG AA for body text. Avoid black 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.
#99aab6 · #728592 · #3e5361 · #2c3f4c · #0f202b · #00050d
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.
#457c82 · #2f697c · #3e5361 · #244164 · #242e51 · #201d3c
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.
#a7a4c1 · #8882b4 · #6b6981 · #3e5361 · #0d3a52 · #002033
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.
#d3a37f · #63717b · #3e5361 · #1e3646 · #051b28 · #00040a
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f8f0eb · #a3acb3 · #6d6864 · #3e5361 · #303a40 · #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.
#eaf3fa · #c2cdd4 · #3e5361 · #1e2d37 · #000b15 · #f29444
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#feefe3 · #c9a286 · #8a5e3c · #3e5361 · #502f13 · #00050f
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#feefe3 · #ce9d96 · #7b6633 · #3e5361 · #542a25 · #0b0500
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffecf2 · #cb9cab · #656f3b · #3e5361 · #353c12 · #040001
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#fbedfa · #c09ebe · #8a5e3c · #3e5361 · #1f4124 · #120400
#596C79 · #758692 · #92A1AB · #B0BDC5 · #CFD9E0
#324552 · #273843 · #1C2B35 · #121F27 · #08131A
#42525D · #46525A · #4A5156
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.