Thundercloud #698589

Thundercloud (#698589) is a mid-tone, muted sky blue with an OKLCH hue of 207°, lightness 0.6 and chroma 0.032. 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.

Color values

HEX#698589
RGBrgb(105, 133, 137)
HSLhsl(187, 13%, 47%)
HSVhsv(187, 23%, 54%)
CMYKcmyk(23%, 3%, 0%, 46%)
CIE Lablab(53.6 -9 -5.4)
OKLCHoklch(0.596 0.032 207)

How Thundercloud behaves under real light

Under warm 2700K interior light Thundercloud shifts subtly: drifts toward blue-green; in north-facing or shaded light it shifts subtly: leans toward blue. Overall drift across common illuminants is small (max ΔE ≈ 1.5), so it is a lighting-stable choice.

Test Thundercloud in the color lighting simulator — sweep it through daylight, warm 2700K light, 4000K LED, and shade alongside the rest of your palette.

Contrast & accessibility

Against white it measures 3.95:1 and against black 5.32:1, so black text is the stronger pairing. That pairing passes WCAG AA for body text.

Colors that go with Thundercloud

Tonal

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.

#c5dbde · #9bb4b8 · #698589 · #506a6d · #30474a · #13272a

Analogous

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.

#7db0a1 · #5e9e9b · #698589 · #3b778b · #38627d · #364d6c

Shifted

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.

#a0beed · #909eb5 · #698589 · #306d75 · #145057 · #202d42

Contrast

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.

#d4ecf0 · #a5cbd1 · #91a5a7 · #698589 · #854e48 · #28474c

Quiet Support

The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.

#f9efee · #909d9f · #698589 · #6a6362 · #1f2c2e · #020101

Bright Accent

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.

#e9f4f6 · #bfccce · #698589 · #15292c · #000709 · #e34f47

Gold Accent

The same quiet ground carrying one bright gold voice — the high-energy pairing a cool or muted anchor cannot reach through its own temperature.

#e9f4f6 · #bfccce · #698589 · #15292c · #000709 · #edbc4d

Complementary

The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.

#ffedeb · #bd8c86 · #698589 · #8b544e · #441b18 · #000304

Split-complementary

The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.

#ffedeb · #ba8b9b · #698589 · #865a39 · #421b2a · #0f0300

Triadic

Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.

#faedfa · #af8eae · #698589 · #78622f · #362700 · #030003

Tetradic

Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.

#f3efff · #9e93bb · #698589 · #8b544e · #282d01 · #050000

Tints, shades & muted variants

Tints

#7E979B · #94AAAD · #AABCBF · #C0D0D2 · #D7E3E5

Shades

#556E71 · #41575B · #2E4245 · #1D2E30 · #0C1A1C

Muted

#6E8487 · #738385 · #778183

Using Thundercloud

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.

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