#708090Also known as Slate Grey.
Slate Gray (#708090) is a mid-tone, muted blue with an OKLCH hue of 248°, lightness 0.59 and chroma 0.031. 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 | #708090 |
|---|---|
| RGB | rgb(112, 128, 144) |
| HSL | hsl(210, 13%, 50%) |
| HSV | hsv(210, 22%, 56%) |
| CMYK | cmyk(22%, 11%, 0%, 44%) |
| CIE Lab | lab(52.8 -2.1 -10.6) |
| OKLCH | oklch(0.593 0.031 248) |
Under warm 2700K interior light Slate Gray shifts subtly: leans toward purple; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 1.5), so it is a lighting-stable choice.
#767d87 — ΔE 1.5, shifts subtly: leans toward purple#75818d — ΔE 0.9, is virtually unchanged#708090 — ΔE 0.0, is virtually unchanged#708192 — ΔE 0.4, is virtually unchangedAgainst white it measures 4.05:1 and against black 5.18:1, 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.
#cad7e4 · #a1afbe · #708090 · #576574 · #36434f · #19232e
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.
#78acba · #6597b2 · #708090 · #586c95 · #54577f · #4e4467
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.
#c3b1e5 · #9f97b0 · #708090 · #436484 · #2a4864 · #2f273d
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.
#d3e8fe · #dab185 · #708090 · #55606b · #2f4255 · #1a2631
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f7f1ea · #929aa2 · #708090 · #67635f · #222a32 · #020100
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.
#ecf3f9 · #c3cad2 · #708090 · #1c2631 · #01050e · #f3a749
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#fcefe2 · #b29371 · #708090 · #805c32 · #3d2200 · #00030d
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#fcefe2 · #ba8d7e · #708090 · #6f642e · #431c10 · #040200
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffecef · #bb8a92 · #708090 · #576c3d · #202f08 · #060001
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#fdecf7 · #b28ba6 · #708090 · #805c32 · #02321d · #130600
#8493A1 · #99A6B2 · #AEB9C4 · #C4CDD6 · #DAE1E8
#5B6978 · #475460 · #343F4A · #222B34 · #111820
#73808C · #767F88 · #797F85
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.