#005588Dark Denim (#005588) is a dark, soft sky blue with an OKLCH hue of 245°, lightness 0.43 and chroma 0.109. 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 | #005588 |
|---|---|
| RGB | rgb(0, 85, 136) |
| HSL | hsl(203, 100%, 27%) |
| HSV | hsv(203, 100%, 53%) |
| CMYK | cmyk(100%, 38%, 0%, 47%) |
| CIE Lab | lab(34.5 -1.6 -34.5) |
| OKLCH | oklch(0.434 0.109 245) |
Under warm 2700K interior light Dark Denim shifts subtly: drifts toward blue, loses intensity; in north-facing or shaded light it shifts subtly: drifts toward blue. Overall drift across common illuminants is small (max ΔE ≈ 1.6), so it is a lighting-stable choice.
#1a5480 — ΔE 1.6, shifts subtly: drifts toward blue, loses intensity#105686 — ΔE 0.8, shifts subtly: drifts toward blue#005588 — ΔE 0.0, is virtually unchanged#00558a — ΔE 0.3, shifts subtly: drifts toward blueTest Dark Denim 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 7.91:1 and against black 2.65:1, 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.
#80b1da · #538bb8 · #005588 · #00436d · #00223c · #000614
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.
#268090 · #016b8d · #005588 · #203f75 · #272a5f · #251747
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.
#aca2cb · #917cc4 · #706789 · #005588 · #00395f · #002038
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.
#e6a768 · #7594b0 · #607282 · #005588 · #163750 · #081b2a
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f9f0e7 · #a0adb9 · #6f6963 · #005588 · #2e3b46 · #070301
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.
#faf0e7 · #d5cac0 · #ada195 · #3d2f21 · #1c0d02 · #005588
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#d6e5c1 · #dbbf38 · #5b5d98 · #005588 · #503830 · #051317
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#ffefe0 · #dc9886 · #7e6800 · #005588 · #602314 · #080400
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffecf0 · #db94a4 · #5c7426 · #005588 · #2f4000 · #120003
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#ffebfa · #ce97c2 · #945b16 · #005588 · #004624 · #150600
#346F9D · #5889B3 · #7AA4C8 · #9DC0DD · #C1DBF3
#004773 · #00395E · #002C4A · #001F37 · #001326
#21557D · #325471 · #3F5365
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.